Fate added injury to insult when Jonah Sellers's live-in boyfriend left him: while moving out his ex's belongings, Jonah fell down the stairs and broke his leg. Now his house is a prison, and he's working from home while his sister checks up on him. The only diversion in Jonah's routine is catching the odd glimpse of a man in the apartment across the way taking off his clothes in front of the window.
But then Jonah is distracted by Liam Brooks, the nurse his sister sends over when she goes on vacation. As they dance around their growing attraction, Jonah and Liam begin to wonder about the man in the window. Why is he always dressed in the same clothes? Why is he there one minute and not the next? How is it that he lives in an old woman's apartment? It's while trying to answer these questions that they stumble across a fifty-year-old missing persons case they can't resist trying to solve.