Brian and Mary Hanson live in an elegant New York apartment and are well adjusted, content and comfortable with each other after many years of marriage. He leaves to play a few sets of tennis, she stays home to relax on a lazy Sunday. Normal? So far! Suddenly, along comes an ex-boyfriend of Mary, whom she hasn't seen since College. Brian returns early and...wait, this is just the beginning of what turns out to be a delightful and very funny romantic comedy with a surprising twist.

The Cast