Preheat oven to 325°F (160°C).
In a bowl, mix graham cracker crumbs and melted butter until combined.
Press the mixture into the bottom of a 9-inch springform pan.
In a large mixing bowl, beat the cream cheese until smooth.
Gradually add sugar and vanilla, mixing until well combined.
Add eggs one at a time, mixing well after each addition.
Stir in sour cream and flour until just combined.
Pour the cheesecake filling over the crust in the pan.
Bake for 60 minutes, until the center is set but slightly jiggly.
Turn off the oven and let the cheesecake cool inside for 1 hour before refrigerating overnight.