"Night Slaves" aired on TV in 1970 as an ABC Movie of the Week. It starred James Franciscus, Lee Grant, Scott Marlowe, and Leslie Nielsen.
After a horrible car accident, Clay and Margorie Howard take a vacation for some rest and relaxation. They decide to spend the night in a sleepy little town in California. The town is literally sleepy as everyone we meet is just getting up from a nap! Clay wakes in the middle of the night to find his wife missing. He looks out the window and sees what appears all the townsfolk walking like zombies and getting into trucks. His wife is one of them! He is unable to get her to respond and then suddenly wakes the next morning and everything appears to be fine. He is almost convinced it was a dream.
The next night the same thing happens and Clay is visited by a woman who slowly discloses what is going on. Someone in town is controlling everyone and Clay is immune because of the metal plate in his head. Clay tries to convince the sheriff (Nielsen) that something is going on but nobody believes him.
This is an OK movie that tries to be like an extended episode of the Twilight Zone.