Newlyweds Capt Joe Martin and his wife Honor arrive in the British colony of Aden where he is to replace a much-loved captain. Lt Ed Laithwaite meets an NLF informant who warns of an attack.

Cast: Ben Miles, Stephen Campbell Moore, Jessie Buckley, Essie Davis, Richard Dillane, Amanda Drew, Ouidad Elma, Stefan Erasmus, Clayton Evertson, Tom Glynn-Carney, Louis Greatorex, Aymen Hamdouchi, Joseph Kennedy, Kal Naga, Jeremy Neumark Jones