diff --git a/app/assets/stylesheets/new_design/new_footer.scss b/app/assets/stylesheets/new_design/new_footer.scss
index 75e6df47d..a879bd4b4 100644
--- a/app/assets/stylesheets/new_design/new_footer.scss
+++ b/app/assets/stylesheets/new_design/new_footer.scss
@@ -14,7 +14,7 @@ footer {
   @include vertical-padding(72px);
 }
 
-.dossier-footer {
+.procedure-footer {
   @include vertical-padding(30px);
   line-height: 24px;
 }
diff --git a/app/controllers/sessions/sessions_controller.rb b/app/controllers/sessions/sessions_controller.rb
index ed30ce252..f555f49fc 100644
--- a/app/controllers/sessions/sessions_controller.rb
+++ b/app/controllers/sessions/sessions_controller.rb
@@ -1,6 +1,8 @@
 class Sessions::SessionsController < Devise::SessionsController
   before_action :before_sign_in, only: [:create]
 
+  layout 'new_application'
+
   def before_sign_in
     if user_signed_in?
       sign_out :user
diff --git a/app/controllers/users/sessions_controller.rb b/app/controllers/users/sessions_controller.rb
index 06a7714d8..d63881c96 100644
--- a/app/controllers/users/sessions_controller.rb
+++ b/app/controllers/users/sessions_controller.rb
@@ -2,10 +2,12 @@ class Users::SessionsController < Sessions::SessionsController
   include TrustedDeviceConcern
   include ActionView::Helpers::DateHelper
 
+  layout 'procedure_context', only: [:new, :create]
+
   # GET /resource/sign_in
   def new
-    if user_return_to_procedure_id.present? # WTF ?
-      @dossier = Dossier.new(procedure: Procedure.active(user_return_to_procedure_id))
+    if user_return_to_procedure_id.present?
+      @procedure = Procedure.active(user_return_to_procedure_id)
     end
 
     @user = User.new
diff --git a/app/views/layouts/commencer/_no_procedure.html.haml b/app/views/layouts/commencer/_no_procedure.html.haml
new file mode 100644
index 000000000..34c054883
--- /dev/null
+++ b/app/views/layouts/commencer/_no_procedure.html.haml
@@ -0,0 +1,8 @@
+.no-procedure
+  = image_tag "landing/hero/dematerialiser.svg", class: "paperless-logo"
+  .baseline.center
+    %h3 Un outil simple
+    %p
+      pour gérer les formulaires
+      %br
+      administratifs dématérialisés.
diff --git a/app/views/layouts/commencer/_procedure_description.html.haml b/app/views/layouts/commencer/_procedure_description.html.haml
new file mode 100644
index 000000000..5df533231
--- /dev/null
+++ b/app/views/layouts/commencer/_procedure_description.html.haml
@@ -0,0 +1,8 @@
+.procedure-logos
+  = image_tag logo_img(procedure)
+  - if procedure.euro_flag
+    = image_tag "flag_of_europe.svg"
+%h2.procedure-title
+  = procedure.libelle
+.procedure-description
+  = h string_to_html(procedure.description)
diff --git a/app/views/layouts/procedure_context.html.haml b/app/views/layouts/procedure_context.html.haml
index 223bff4c2..2199d581b 100644
--- a/app/views/layouts/procedure_context.html.haml
+++ b/app/views/layouts/procedure_context.html.haml
@@ -1,22 +1,22 @@
+- procedure = @procedure || @dossier&.procedure || nil
+
 - content_for :content do
   .two-columns.procedure-context
     .columns-container
 
       .column.procedure-preview
-        - procedure = @dossier.procedure
-        .procedure-logos
-          = image_tag logo_img(procedure)
-          - if procedure.euro_flag
-            = image_tag "flag_of_europe.svg"
-        %h2.procedure-title
-          = procedure.libelle
-        .procedure-description
-          = h string_to_html(procedure.description)
+        - if procedure
+          = render partial: 'layouts/commencer/procedure_description', locals: { procedure: procedure }
+        - else
+          = render partial: 'layouts/commencer/no_procedure'
 
       .column.procedure-context-content
         = yield
 
 - content_for :footer do
-  = render partial: "new_user/dossiers/dossier_footer", locals: { dossier: @dossier }
+  - if procedure
+    = render partial: 'new_user/procedure_footer', locals: { procedure: procedure, dossier: @dossier }
+  - else
+    = render partial: 'new_user/dossiers/index_footer'
 
 = render template: 'layouts/application'
diff --git a/app/views/new_user/dossiers/_general_footer_row.html.haml b/app/views/new_user/_general_footer_row.html.haml
similarity index 100%
rename from app/views/new_user/dossiers/_general_footer_row.html.haml
rename to app/views/new_user/_general_footer_row.html.haml
diff --git a/app/views/new_user/dossiers/_dossier_footer.html.haml b/app/views/new_user/_procedure_footer.html.haml
similarity index 79%
rename from app/views/new_user/dossiers/_dossier_footer.html.haml
rename to app/views/new_user/_procedure_footer.html.haml
index 8c6f2d11f..2ac523da8 100644
--- a/app/views/new_user/dossiers/_dossier_footer.html.haml
+++ b/app/views/new_user/_procedure_footer.html.haml
@@ -1,6 +1,6 @@
-%footer.dossier-footer
+%footer.procedure-footer
   .container
-    - service = dossier.procedure.service
+    - service = procedure.service
     - if service.present?
       %ul.footer-row.footer-columns
         %li.footer-column
@@ -15,12 +15,12 @@
         %li.footer-column
           %h3.footer-header Poser une question sur votre dossier :
           %p
-            - if dossier.brouillon?
-              Par email :
-              = link_to service.email, "mailto:#{service.email}"
-            - else
+            - if dossier.present? && !dossier.brouillon?
               Directement
               = link_to "par la messagerie", messagerie_dossier_path(dossier)
+            - else
+              Par email :
+              = link_to service.email, "mailto:#{service.email}"
 
           %p
             Par téléphone :
@@ -29,7 +29,7 @@
           %p
             Horaires : #{ service.horaires.sub(/\S/, &:downcase) }
 
-        - politiques = politiques_conservation_de_donnees(dossier.procedure)
+        - politiques = politiques_conservation_de_donnees(procedure)
         - if politiques.present?
           %li.footer-column
             %h3.footer-header Conservation des données :
@@ -37,4 +37,4 @@
               %p= politique
 
     .footer-row.footer-bottom-line
-      = render partial: "new_user/dossiers/general_footer_row", locals: { dossier: @dossier }
+      = render partial: 'new_user/general_footer_row', locals: { dossier: dossier }
diff --git a/app/views/new_user/dossiers/_index_footer.html.haml b/app/views/new_user/dossiers/_index_footer.html.haml
index 241ba25d7..77dbec78e 100644
--- a/app/views/new_user/dossiers/_index_footer.html.haml
+++ b/app/views/new_user/dossiers/_index_footer.html.haml
@@ -1,4 +1,4 @@
-%footer.dossier-footer
+%footer.procedure-footer
   .container
     .footer-row.footer-bottom-line
-      = render partial: "new_user/dossiers/general_footer_row", locals: { dossier: nil }
+      = render partial: "new_user/general_footer_row", locals: { dossier: nil }
diff --git a/app/views/new_user/dossiers/brouillon.html.haml b/app/views/new_user/dossiers/brouillon.html.haml
index 03296a576..c131e8fc7 100644
--- a/app/views/new_user/dossiers/brouillon.html.haml
+++ b/app/views/new_user/dossiers/brouillon.html.haml
@@ -1,7 +1,7 @@
 - content_for(:title, "Modification du brouillon nº #{@dossier.id} (#{@dossier.procedure.libelle})")
 
 - content_for :footer do
-  = render partial: "new_user/dossiers/dossier_footer", locals: { dossier: @dossier }
+  = render partial: "new_user/procedure_footer", locals: { procedure: @dossier.procedure, dossier: @dossier }
 
 .dossier-header.sub-header
   .container
diff --git a/app/views/new_user/dossiers/demande.html.haml b/app/views/new_user/dossiers/demande.html.haml
index b29f8db7f..0f46abe02 100644
--- a/app/views/new_user/dossiers/demande.html.haml
+++ b/app/views/new_user/dossiers/demande.html.haml
@@ -1,7 +1,7 @@
 - content_for(:title, "Demande · Dossier nº #{@dossier.id} (#{@dossier.procedure.libelle})")
 
 - content_for :footer do
-  = render partial: "new_user/dossiers/dossier_footer", locals: { dossier: @dossier }
+  = render partial: "new_user/procedure_footer", locals: { procedure: @dossier.procedure, dossier: @dossier }
 
 #dossier-show
   = render partial: 'new_user/dossiers/show/header', locals: { dossier: @dossier }
diff --git a/app/views/new_user/dossiers/etablissement.html.haml b/app/views/new_user/dossiers/etablissement.html.haml
index 21bd3755a..60a7f5619 100644
--- a/app/views/new_user/dossiers/etablissement.html.haml
+++ b/app/views/new_user/dossiers/etablissement.html.haml
@@ -1,7 +1,7 @@
 - content_for(:title, "Informations sur l’établissement")
 
 - content_for :footer do
-  = render partial: "new_user/dossiers/dossier_footer", locals: { dossier: @dossier }
+  = render partial: "new_user/procedure_footer", locals: { procedure: @dossier.procedure, dossier: @dossier }
 
 .etablissement
   .container
diff --git a/app/views/new_user/dossiers/merci.html.haml b/app/views/new_user/dossiers/merci.html.haml
index 6c14d0122..b148bd365 100644
--- a/app/views/new_user/dossiers/merci.html.haml
+++ b/app/views/new_user/dossiers/merci.html.haml
@@ -1,7 +1,7 @@
 - content_for(:title, "Dossier bien envoyé (#{@dossier.procedure.libelle})")
 
 - content_for :footer do
-  = render partial: "new_user/dossiers/dossier_footer", locals: { dossier: @dossier }
+  = render partial: "new_user/procedure_footer", locals: { procedure: @dossier.procedure, dossier: @dossier }
 
 .merci
   .container
diff --git a/app/views/new_user/dossiers/messagerie.html.haml b/app/views/new_user/dossiers/messagerie.html.haml
index 9cac5fe77..93a18f347 100644
--- a/app/views/new_user/dossiers/messagerie.html.haml
+++ b/app/views/new_user/dossiers/messagerie.html.haml
@@ -1,7 +1,7 @@
 - content_for(:title, "Messagerie · Dossier nº #{@dossier.id} (#{@dossier.procedure.libelle})")
 
 - content_for :footer do
-  = render partial: "new_user/dossiers/dossier_footer", locals: { dossier: @dossier }
+  = render partial: "new_user/procedure_footer", locals: { procedure: @dossier.procedure, dossier: @dossier }
 
 #dossier-show
   = render partial: 'new_user/dossiers/show/header', locals: { dossier: @dossier }
diff --git a/app/views/new_user/dossiers/modifier.html.haml b/app/views/new_user/dossiers/modifier.html.haml
index 7341db4fd..0c46b66fa 100644
--- a/app/views/new_user/dossiers/modifier.html.haml
+++ b/app/views/new_user/dossiers/modifier.html.haml
@@ -1,7 +1,7 @@
 - content_for(:title, "Modifier · Dossier nº #{@dossier.id} (#{@dossier.procedure.libelle})")
 
 - content_for :footer do
-  = render partial: "new_user/dossiers/dossier_footer", locals: { dossier: @dossier }
+  = render partial: "new_user/procedure_footer", locals: { procedure: @dossier.procedure, dossier: @dossier }
 
 #dossier-show
   = render partial: 'new_user/dossiers/show/header', locals: { dossier: @dossier }
diff --git a/app/views/new_user/dossiers/show.html.haml b/app/views/new_user/dossiers/show.html.haml
index 57b944251..40fb9603f 100644
--- a/app/views/new_user/dossiers/show.html.haml
+++ b/app/views/new_user/dossiers/show.html.haml
@@ -1,7 +1,7 @@
 - content_for(:title, "Résumé · Dossier nº #{@dossier.id} (#{@dossier.procedure.libelle})")
 
 - content_for :footer do
-  = render partial: "new_user/dossiers/dossier_footer", locals: { dossier: @dossier }
+  = render partial: "new_user/procedure_footer", locals: { procedure: @dossier.procedure, dossier: @dossier }
 
 #dossier-show
   = render partial: 'new_user/dossiers/show/header', locals: { dossier: @dossier }
diff --git a/app/views/users/sessions/new.html.haml b/app/views/users/sessions/new.html.haml
index b3f6bd9bb..721df7b30 100644
--- a/app/views/users/sessions/new.html.haml
+++ b/app/views/users/sessions/new.html.haml
@@ -1,63 +1,39 @@
-.two-columns.auth
-  .columns-container
-    .column.procedure-preview
-      - if !@dossier
-        = image_tag "landing/hero/dematerialiser.svg", class: "paperless-logo"
-        .baseline.center
-          %h3 Un outil simple
-          %p
-            pour gérer les formulaires
-            %br
-            administratifs dématérialisés.
-      - else
+.auth-form.sign-in-form
+  - if resource_name == :user
+    %p.register
+      %span
+        Nouveau sur demarches-simplifiees.fr ?
+      = link_to "Créer un compte", new_registration_path(resource_name), class: "button primary auth-signup-button"
+
+    %hr
+
+  = form_for @user, url: user_session_path, html: { class: "form" } do |f|
+    %h1 Connectez-vous
+
+    = f.label :email, "Email"
+    = f.text_field :email, autofocus: true
+
+    = f.label :password, "Mot de passe"
+    = f.password_field :password, value: @user.password, placeholder: "8 caractères minimum"
+
+    .auth-options
+      - if devise_mapping.rememberable?
+        %div
+          = f.check_box :remember_me, as: :boolean
+          = f.label :remember_me, "Se souvenir de moi", class: 'remember-me'
+
+      - if [:user, :gestionnaire].include?(resource_name)
         .text-right
-          = link_to "Fermer", users_no_procedure_url, class: "link close-procedure"
-        .procedure-logos
-          = image_tag logo_img(@dossier.procedure)
-          - if @dossier.procedure.euro_flag
-            = image_tag "flag_of_europe.svg"
+          = link_to "Mot de passe oublié ?", new_password_path(resource_name), class: "link"
 
-        %h2.procedure-title
-          = @dossier.procedure.libelle
-        .procedure-description
-          = h simple_format(@dossier.procedure.description)
+    = f.submit "Se connecter", class: "button large primary expand"
 
-    .column.procedure-context-content.auth-form.sign-in-form
-      - if resource_name == :user
-        %p.register
-          %span
-            Nouveau sur demarches-simplifiees.fr ?
-          = link_to "Créer un compte", new_registration_path(resource_name), class: "button primary auth-signup-button"
+  .separation.center
+    ou
 
-        %hr
+  .center
+    = image_tag "login-with-fc-hover.svg", style: "display: none"
+    = link_to "", france_connect_particulier_path, class: "login-with-fc"
 
-      = form_for @user, url: user_session_path, html: { class: "form" } do |f|
-        %h1 Connectez-vous
-
-        = f.label :email, "Email"
-        = f.text_field :email, autofocus: true
-
-        = f.label :password, "Mot de passe"
-        = f.password_field :password, value: @user.password, placeholder: "8 caractères minimum"
-
-        .auth-options
-          - if devise_mapping.rememberable?
-            %div
-              = f.check_box :remember_me, as: :boolean
-              = f.label :remember_me, "Se souvenir de moi", class: 'remember-me'
-
-          - if [:user, :gestionnaire].include?(resource_name)
-            .text-right
-              = link_to "Mot de passe oublié ?", new_password_path(resource_name), class: "link"
-
-        = f.submit "Se connecter", class: "button large primary expand"
-
-      .separation.center
-        ou
-
-      .center
-        = image_tag "login-with-fc-hover.svg", style: "display: none"
-        = link_to "", france_connect_particulier_path, class: "login-with-fc"
-
-      .center
-        = link_to "Qu’est-ce que FranceConnect ?", "https://franceconnect.gouv.fr/", target: "_blank", class: "link"
+  .center
+    = link_to "Qu’est-ce que FranceConnect ?", "https://franceconnect.gouv.fr/", target: "_blank", class: "link"
diff --git a/spec/features/sessions/sign_up_spec.rb b/spec/features/new_user/sign_up_spec.rb
similarity index 100%
rename from spec/features/sessions/sign_up_spec.rb
rename to spec/features/new_user/sign_up_spec.rb
diff --git a/spec/features/sessions/sign_in_spec.rb b/spec/features/sessions/sign_in_spec.rb
new file mode 100644
index 000000000..93aa780ed
--- /dev/null
+++ b/spec/features/sessions/sign_in_spec.rb
@@ -0,0 +1,56 @@
+require 'spec_helper'
+
+feature 'Signin in:' do
+  let!(:user) { create(:user, password: password) }
+  let(:password) { 'testpassword' }
+
+  scenario 'an existing user can sign-in' do
+    visit root_path
+    click_on 'Connexion'
+
+    sign_in_with user.email, password
+
+    expect(page).to have_current_path dossiers_path
+  end
+
+  context 'when visiting a procedure' do
+    let(:procedure) { create :simple_procedure, :with_service }
+
+    before do
+      visit commencer_path(path: procedure.path)
+    end
+
+    scenario 'an existing user can sign-in and fill the procedure' do
+      expect(page).to have_current_path new_user_session_path
+      expect(page).to have_content procedure.libelle
+      expect(page).to have_content procedure.description
+      expect(page).to have_content procedure.service.email
+
+      sign_in_with user.email, password
+
+      expect(page).to have_current_path identite_dossier_path(user.reload.dossiers.last)
+      expect(page).to have_content procedure.libelle
+      expect(page).to have_content procedure.description
+      expect(page).to have_content "Données d'identité"
+    end
+  end
+
+  context 'when a user is not confirmed yet' do
+    let!(:user) { create(:user, password: password, confirmed_at: nil) }
+
+    # Ideally, when signing-in with an unconfirmed account,
+    # the user would be redirected to the "resend email confirmation" page.
+    #
+    # However the check for unconfirmed accounts is made by Warden every time a page is loaded –
+    # and much earlier than SessionsController#create.
+    #
+    # For now only test the default behavior (an error message is displayed).
+    scenario 'they get an error message' do
+      visit root_path
+      click_on 'Connexion'
+
+      sign_in_with user.email, password
+      expect(page).to have_content 'Vous devez confirmer votre adresse email pour continuer'
+    end
+  end
+end
diff --git a/spec/views/layouts/procedure_context.html.haml_spec.rb b/spec/views/layouts/procedure_context.html.haml_spec.rb
index 2c9e51856..062a2d39d 100644
--- a/spec/views/layouts/procedure_context.html.haml_spec.rb
+++ b/spec/views/layouts/procedure_context.html.haml_spec.rb
@@ -4,25 +4,61 @@ describe 'layouts/procedure_context.html.haml', type: :view do
   let(:procedure) { create(:simple_procedure, :with_service) }
   let(:dossier) { create(:dossier, procedure: procedure) }
 
-  before do
-    assign(:dossier, dossier)
-  end
-
   subject do
     render html: 'Column content', layout: 'layouts/procedure_context.html.haml'
   end
 
-  it 'renders a description of the procedure' do
-    expect(subject).to have_text(dossier.procedure.libelle)
-    expect(subject).to have_text(dossier.procedure.description)
+  context 'when a procedure is assigned' do
+    before do
+      assign(:procedure, procedure)
+    end
+
+    it 'renders a description of the procedure' do
+      expect(subject).to have_text(procedure.libelle)
+      expect(subject).to have_text(procedure.description)
+    end
+
+    it 'renders the inner content' do
+      expect(subject).to have_text('Column content')
+    end
+
+    it 'renders the procedure footer' do
+      expect(subject).to have_text(procedure.service.nom)
+      expect(subject).to have_text(procedure.service.email)
+    end
   end
 
-  it 'renders the inner content' do
-    expect(subject).to have_text('Column content')
+  context 'when a dossier is assigned' do
+    before do
+      assign(:dossier, dossier)
+    end
+
+    it 'renders a description of the procedure' do
+      expect(subject).to have_text(dossier.procedure.libelle)
+      expect(subject).to have_text(dossier.procedure.description)
+    end
+
+    it 'renders the inner content' do
+      expect(subject).to have_text('Column content')
+    end
+
+    it 'renders the procedure footer' do
+      expect(subject).to have_text(dossier.procedure.service.nom)
+      expect(subject).to have_text(dossier.procedure.service.email)
+    end
   end
 
-  it 'renders the dossier footer' do
-    expect(subject).to have_text(dossier.procedure.service.nom)
-    expect(subject).to have_text(dossier.procedure.service.email)
+  context 'when neither procedure or dossier are assigned' do
+    it 'renders a placeholder for the procedure' do
+      expect(subject).to have_selector('.no-procedure')
+    end
+
+    it 'renders the inner content' do
+      expect(subject).to have_text('Column content')
+    end
+
+    it 'renders a generic footer' do
+      expect(subject).to have_text('Mentions légales')
+    end
   end
 end
diff --git a/spec/views/new_user/dossiers/_dossier_footer.html.haml_spec.rb b/spec/views/new_user/_procedure_footer.html.haml_spec.rb
similarity index 82%
rename from spec/views/new_user/dossiers/_dossier_footer.html.haml_spec.rb
rename to spec/views/new_user/_procedure_footer.html.haml_spec.rb
index 21ef07687..a870abe50 100644
--- a/spec/views/new_user/dossiers/_dossier_footer.html.haml_spec.rb
+++ b/spec/views/new_user/_procedure_footer.html.haml_spec.rb
@@ -1,4 +1,4 @@
-describe 'new_user/dossiers/_dossier_footer.html.haml', type: :view do
+describe 'new_user/procedure_footer.html.haml', type: :view do
   let(:service) { create(:service) }
   let(:dossier) {
     dossier = create(:dossier)
@@ -6,7 +6,7 @@ describe 'new_user/dossiers/_dossier_footer.html.haml', type: :view do
     return dossier
   }
 
-  subject { render 'new_user/dossiers/dossier_footer.html.haml', dossier: dossier }
+  subject { render 'new_user/procedure_footer.html.haml', procedure: dossier.procedure, dossier: dossier }
 
   it "affiche les informations de contact" do
     expect(subject).to have_text(service.nom)
diff --git a/spec/views/users/sessions/new.html.haml_spec.rb b/spec/views/users/sessions/new.html.haml_spec.rb
index 714817335..3ffddef9f 100644
--- a/spec/views/users/sessions/new.html.haml_spec.rb
+++ b/spec/views/users/sessions/new.html.haml_spec.rb
@@ -10,24 +10,12 @@ describe 'users/sessions/new.html.haml', type: :view do
 
   before do
     assign(:user, User.new)
+    render
   end
 
-  context 'when user_return_to session params contains a procedure_id' do
-    before do
-      assign(:dossier, dossier)
-      render
-    end
-
-    it { expect(rendered).to have_selector('.procedure-logos') }
-    it { expect(rendered).to have_content(dossier.procedure.libelle) }
-    it { expect(rendered).to have_content(dossier.procedure.description) }
-  end
-
-  context 'when user_return_to session params not contains a procedure_id' do
-    before do
-      render
-    end
-
-    it { expect(rendered).to have_content('Un outil simple') }
+  it 'renders' do
+    expect(rendered).to have_field('Email')
+    expect(rendered).to have_field('Mot de passe')
+    expect(rendered).to have_button('Se connecter')
   end
 end