One of Ray's informants is stabbed, but the prime suspect is able to provide an airtight alibi. Meanwhile, a flight attendant is murdered in Toronto, and her father heads to Chicago looking for justice.
Tropes featured include:
- "Strangers on a Train"-Plot Murder: The solution to the episode: the ex-con TV host is being blackmailed by a police informant over an armed robbery he was never caught for, while the husband of a wealthy woman is having trouble keeping his mistress from contacting his wife. They both have such obvious motives that they decide to swap victims.
- Title Drop: Uttered by Ray towards the end of the episode.