A Good Marriage By Stephen King

What happens when, on a perfectly ordinary evening, all the things you believed in and took for granted are turned upside down?

When her husband of more than 20 years is away on one of his business trips, Darcy Anderson looks for batteries in the garage. Her toe knocks up against a box under a worktable and she discovers the stranger inside her husband. It’s a horrifying discovery, rendered with bristling intensity, and it definitively ends a good marriage.