Once a fearless SAS hero, Andy 'Deadman' Bird now battles the harsh streets of London after a catastrophic mission stripped him of his hearing, career, home and marriage. His only solace is Tyson, his fiercely loyal and battle-tested dog.

When fate thrusts them into the path of a chilling alleyway murder, Andy and Tyson become the next targets. Who are these relentless hunters, and what dangerous secrets are they willing to kill for?

Desperate and cornered, Andy reaches out to his former brothers–in–arms – a team who owe him their very lives. But as they unravel a sinister web of organised crime and deadly political plots, who will be saving who this time?