Former soldier Owen Gallagher is thrust back into action in the explosive sequel to Black Flag.
An old man is shot dead in a quiet town.
An innocent woman dies in a botched assassination.
A civil servant is found crucified, and a rogue MI6 agent finds a way home.
What links these events as Northern Ireland slides towards civil war?
Why are foreign intelligence operatives converging on London?
Can Gallagher trust his friends? Should he join forces with old enemies? How far will he go to avenge the dead?