SUNDAY 23 SEPTEMBER 2018
The six-part series also stars Gina McKee, Sophie Rundle, Pippa Haywood, Stuart Bowman, Vincent Franklin, Ash Tandon, and Nina Toussaint-White.
Principal Protection Officer David Budd (Richard Madden) has made a major breakthrough in the investigation into the attack on the Home Secretary (Keeley Hawes), but his enquiries have put him in mortal danger.
With the clock ticking and no one left who believes him, David attempts to prove his innocence.
But the evidence against him begins to stack up...