After losing their parents when they were just babies, private investigators Fran and Ken Stein now specialize in helping adoptees find their birth parents. So when a client asks them for help finding her father, with her only clue a rare ukulele, the case is a little weird, sure, but it's nothing they can't handle. But soon Fran and her brother are plunged into a world where nothing makes sense - and not just the fact that a very short (but very cute) NYPD detective keeps trying to take eternal singleton Fran out on dates. All Fran wants to do is find the ukulele and collect their fee, but it's hard to keep your focus when you're stumbling over corpses and receiving messages that suggest your (dead) parents are very much alive. Ukuleles aside, it's becoming clear that someone knows something they shouldn't - that Fran and Ken Stein weren't so much born, as built . . .