Movies: Identical twins

Jack Torrance accepts a caretaker job at the Overlook Hotel, where he, along with his wife Wendy and their son Danny, must live isolated from the rest of the world for the winter. But they aren't prepared for the madness that lurks within....

A year prior to the first scene, Stan married Ollie's sister, and Ollie married Stan's sister in a double wedding. They all live together and Stan and Ollie work in the same office....