London Spy If This Is a Lie (2015) Online
Following another death, Danny finds his allies deserting him but decides to go public with Alex's research. After an unwelcome visit from his parents who say they are being used to ensnare him, he calls on Frances, who surprises him with a revelation about her family, her own life as a spy and her influence on her son. This in turn leads Danny to identify his lover's killer.
| Episode cast overview, first billed only: | |||
 | Ben Whishaw | - | Danny |
 | Harriet Walter | - | Claire |
 | Jim Broadbent | - | Scottie |
 | Zrinka Cvitesic | - | Sara |
 | Josef Altin | - | Pavel |
 | Adrian Lester | - | Professor Marcus Shaw |
 | Samantha Spiro | - | Detective Taylor |
 | Lizzy McInnerny | - | Danny's Mother |
 | David Meyer | - | Danny's Father |
| Sam Kenyon | - | HIV Group Chair |
| Deon Lee-Williams | - | Ryan |
| Louis Saint-Juste | - | Oldest Guy |
 | Edward Holcroft | - | Alex |
 | Charlotte Rampling | - | Frances |
 | David Hayman | - | Mr Turner |
Was supposed to be broadcast on BBC First in the Netherlands on Saturday February 5th. Due to a technical malfunction this episode was not broadcast on this day. It was rescheduled to Thursday February 11th 2016.