Episodes
The Secret Adversary, Part One
July 26, 2015
Tommy and Tuppence have a chance encounter on a train with an agitated young woman who suddenly disappears and never returns to her seat.
The Secret Adversary, Part Two
August 2, 2015
Tommy and Tuppence go undercover; he as a member of Brown's gang and she as a maid to a potential suspect.
The Secret Adversary, Part Three
August 9, 2015
The Beresfords search for Jane Finn comes to a close, as they uncover the identity of Mr. Brown.
N or M? - Part One
August 16, 2015
Tommy 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.
N or M? - Part Two
August 23, 2015
Tommy and Tuppence turn their attention to their fellow occupants of Sans Souci to find N.
N or M? - Part Three
August 30, 2015
Tommy 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.
