As the Cold War enters its final act, the CIA is sent scrambling when a rendezvous with a prized asset goes horribly awry. CIA officer Sandy Grimes begins her investigation into the source of the problem and quickly discovers that this lost asset is just the tip of the iceberg.

Cast: Jodie Whittaker, Paul Rhys, Harriet Walter, Ralph Brown, Stuart Milligan, Amelia Clarkson, Christina Cole, Julian Ovenden, Lex Shrapnel, John Lynch, Trystan Gravelle, Nicholas Woodeson, Darius Petkevicius, Todd Boyce, David Horovitch