... because the leading lady here (Janis Carter as Jean Lang) makes some very questionable moves regarding a stranger she sees in a restaurant (Richard Dix as the amnesiac). She is using cards to tell fortunes, and Dix is supposed to be in grave danger for the next 24 hours according to the cards. He is a total stranger to her and yet she gets up from the table and accosts him in the street about this. It turns out Dix is an amnesiac, a condition brought on by being hit by a car a short time before. Does she take him to the police or to a hospital? NO! She takes this total stranger home to sleep on her couch in the apartment she shares with her kid sister. Yikes!
So the guy has no ID on him. Just some clues in his pockets - a prescription, an order for a birthday cake from a bakery, a train schedule with a particular town circled, a cigarette lighter, receipt for two dozen roses, a Canadian dollar with a license number penciled in, and a key. So that night and the next day Jean and her sister embark on a kind of scavenger hunt, using these clues to establish who this guy is. Jean is paired with the amnesiac, her sister paired with her fiance, both teams using the clues they have. So the amnesiac seems gentle as a lamb, even making breakfast for Jean and her sister and saying grace before eating. But one thing Jean has got to notice - every time she leaves him alone and near an animal, she returns to find that animal dead. And yet she remains unalarmed.
It's a pretty interesting story how all of these Thin Man style clues are put together into a cohesive portrait of who this guy actually is. As usual in the Whistler series, it boasts a good noir atmosphere considering it was a Columbia quickie. As with several of the Whistler films, this one has the theme of unescapable destiny as the plot comes full circle.