Tommy Beresford and Tuppence Cowley are a real sweet couple. But there’s one problem: they have neither money nor work, and they’re always broke. So the thought comes to their heads: to open their own enterprise—“Young Adventurers Ltd.”—since they’re best at doing fraud. Here comes their first order from a certain Mr. Wittington. The fee is excellent, but the case is so strange that Tuppence decides not to use her real name and introduces herself with a name she happened to overhear while Wittington was talking to another man. And suddenly, the client changes—he hurries away, for some reason handing Tuppence a large sum of money, and soon disappears from the horizon of the adventurers without a trace. Intrigued, Beresford and Cowley want to find out who this Wittington really is—and why he’s so afraid of the name Jane Finn…