diff --git a/app/controllers/movies_controller.rb b/app/controllers/movies_controller.rb
index 362e2791..449bfb1a 100644
--- a/app/controllers/movies_controller.rb
+++ b/app/controllers/movies_controller.rb
@@ -21,6 +21,17 @@ def show
       )
   end
 
+  def create
+    movie = Movie.new(movie_params)
+    if movie.save
+      render json: movie.as_json, status: :created
+      return
+    else
+      render json: {errors: movie.errors.messages}, status: :bad_request
+      return
+    end
+  end
+
   private
 
   def require_movie
@@ -29,4 +40,9 @@ def require_movie
       render status: :not_found, json: { errors: { title: ["No movie with title #{params["title"]}"] } }
     end
   end
+
+  def movie_params
+    params.permit(:title, :overview, :release_date, :image_url, :external_id)
+  end
+
 end
diff --git a/app/controllers/rentals_controller.rb b/app/controllers/rentals_controller.rb
index 67e77073..b67dac93 100644
--- a/app/controllers/rentals_controller.rb
+++ b/app/controllers/rentals_controller.rb
@@ -5,7 +5,6 @@ class RentalsController < ApplicationController
   # TODO: make sure that wave 2 works all the way
   def check_out
     rental = Rental.new(movie: @movie, customer: @customer, due_date: params[:due_date])
-
     if rental.save
       render status: :ok, json: {}
     else
diff --git a/app/models/movie.rb b/app/models/movie.rb
index fda94941..f9e28242 100644
--- a/app/models/movie.rb
+++ b/app/models/movie.rb
@@ -2,6 +2,9 @@ class Movie < ApplicationRecord
   has_many :rentals
   has_many :customers, through: :rentals
 
+  validates :title, :overview, :release_date, :image_url, :external_id, presence: true
+  validates :external_id, uniqueness: true
+
   def available_inventory
     self.inventory - Rental.where(movie: self, returned: false).length
   end
diff --git a/config/routes.rb b/config/routes.rb
index f4c99688..76715f9a 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -3,7 +3,7 @@
 
   resources :customers, only: [:index]
 
-  resources :movies, only: [:index, :show], param: :title
+  resources :movies, only: [:index, :show, :create], param: :title
 
   post "/rentals/:title/check-out", to: "rentals#check_out", as: "check_out"
   post "/rentals/:title/return", to: "rentals#check_in", as: "check_in"
diff --git a/test/controllers/movies_controller_test.rb b/test/controllers/movies_controller_test.rb
index 9172cf6e..aff43fac 100644
--- a/test/controllers/movies_controller_test.rb
+++ b/test/controllers/movies_controller_test.rb
@@ -75,4 +75,39 @@ class MoviesControllerTest < ActionDispatch::IntegrationTest
 
     end
   end
+
+  describe "create" do
+    before do
+      @valid_movie = {
+        title: "something",
+        overview: "something",
+        release_date: "01-01-2020",
+        inventory: 5,
+        image_url: "https://designerdoginfo.files.wordpress.com/2012/10/apricot-cavoodle-puppy-on-blue-blanket.jpg",
+        external_id: 6
+      }
+      @invalid_movie = {
+        inventory: 5,
+      }
+    end
+    
+
+    
+
+    it "can create a new movie with valid data" do
+      expect { post movies_path, params: @valid_movie }.must_differ "Movie.count", 1
+    end
+    
+    it "responds with bad request and errors for invalid data" do
+      expect { post movies_path, params: @invalid_movie }.wont_change "Movie.count"
+      
+      body = check_response(expected_type: Hash, expected_status: :bad_request)
+      expect(body.keys).must_include "errors"
+      expect(body["errors"].keys).must_include "title"
+      expect(body["errors"].keys).must_include "overview"
+      expect(body["errors"].keys).must_include "release_date"
+      expect(body["errors"].keys).must_include "external_id"
+    end
+
+  end
 end
diff --git a/test/models/movie_test.rb b/test/models/movie_test.rb
index 70b6a7c6..9d5910ff 100644
--- a/test/models/movie_test.rb
+++ b/test/models/movie_test.rb
@@ -6,7 +6,9 @@ class MovieTest < ActiveSupport::TestCase
       "title": "Hidden Figures",
       "overview": "Some text",
       "release_date": "1960-06-16",
-      "inventory": 8
+      "inventory": 8,
+      "image_url": "https://designerdoginfo.files.wordpress.com/2012/10/apricot-cavoodle-puppy-on-blue-blanket.jpg",
+      "external_id": 5,
     }
   }
 
diff --git a/test/test_helper.rb b/test/test_helper.rb
index df134a4d..b6faa6fd 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -17,4 +17,13 @@ class ActiveSupport::TestCase
   fixtures :all
 
   # Add more helper methods to be used by all tests here...
+  # helper method
+  def check_response(expected_type:, expected_status: :success)
+    must_respond_with expected_status
+    expect(response.header['Content-Type']).must_include 'json'
+
+    body = JSON.parse(response.body)
+    expect(body).must_be_kind_of expected_type
+    return body
+  end
 end