When a terrorist escapes MI-5 custody during a routine handover, Will Holloway (Kit Harington) must team with a disgraced Intelligence Chief to track him down before an imminent attack on London.
MI-5
Kit Harington
Peter Firth
Jennifer Ehle
Elyes Gabel
Tuppence Middleton
Lara Pulver
Bharat Nalluri
Ollie Madden
Jane Featherstone
Stephen Garrett
Steve Christian