I'm Thinking of Ending Things

The government gets wind of a plot to destroy America involving a trio of nuclear weapons for which the whereabouts are unknown. It's up to a seasoned interrogator and an FBI agent to find out exactly where the nukes are.

Leonard Shelby is tracking down the man who raped and murdered his wife. The difficulty of locating his wife's killer, however, is compounded by the fact that he suffers from a rare, untreatable form of short-term memory loss. Although he can recall details of life before his accident, Leonard cannot remember what happened fifteen minutes ago, where he's going, or why.

20 men are chosen to participate in the roles of guards and prisoners in a psychological study that ultimately spirals out of control.

A young woman returns a lonely widow’s lost purse, leading to an unlikely relationship between the two — until the young woman discovers the widow might not be all that she seems.