S1 E1
A defecting KGB officer reveals details of a devastating Soviet plot.
A defecting KGB officer reveals details of a devastating Soviet plot.
The next agent on the Soviet list is a brutal man currently in prison for assault.
Arkady reveals the next name, a sleeper agent with connections in the US military.
Discovering the KGB is one step ahead, the team must work out who can be trusted.
Joe's mission is under threat from a mole inside MI5.
The team finally have a promising lead in the investigation.