In the Valley of the Moon, follows a young man working as a hitman for the Italian mob in 1977. He takes a job in Petaluma, California, posing as a potential buyer at an open house to confront the realtor who he suspects has a sinister connection to his past.

A blind waitress at a dining-in-the-dark restaurant becomes the sole witness to a murder, making her the next target of a killer determined to eliminate the only person who could identify him.