Partners in CrimeSeason 12015 · 6 episodesEpisodes1The Secret Adversary, Part OneTommy and Tuppence have a chance encounter on a train with an agitated young woman who suddenly disappears and never returns to her seat.2The Secret Adversary, Part TwoTommy and Tuppence go undercover; he as a member of Brown's gang and she as a maid to a potential suspect.3The Secret Adversary, Part ThreeThe Beresfords search for Jane Finn comes to a close, as they uncover the identity of Mr. Brown.4N or M? - Part OneTommy is sent on a secret mission to discover the identity of Soviet spy staying at a seaside guest-house; Tuppence refuses to be left behind.5N or M? - Part TwoTommy and Tuppence turn their attention to their fellow occupants of Sans Souci to find N.6N or M? - Part ThreeTommy has finally found the missing scientist, but they're both being held against their will by M, and still none the wiser as to who N is.
