First broadcast 26th July 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.
Camilla Marie Beeput as Jane Finn
Jessica Raine as Tuppence Beresford
David Walliams as Tommy Beresford
George Taylor as Dominic Villiers
Simon Lenagan as Assassin
Miles Roughley as George
James Fleet as Carter
Peter Gordon as Old Man
Paul Brennen as Lucky
Jonny Phillips as Whittington
Clarke Peters as Julius Hersheimmer
Jamie Taylor as Urchin
Matthew Steer as Albert
Alice Krige as Rita Vandemeyer
Ian Hogan as Fruit seller
Madeline Appiah as Annette
Robert Whitelock as Conrad
Ancuta Breaban as Amber
Brett Carter as Prodraig
Shonn Gregory as Parisian
Richard Herdman as Gangster
David Howkins as Paris Commuter
Emma Jouannet as Lucy
Pete Meads as Mourner
James Thomas Scott as Opera Customer
Janette Sharpe as Passerby / Cafe Customer
