"When Thomas Pitt is tasked with playing bodyguard to Sofia Delacruz, a young and controversial British preacher who has been living in Spain and has returned to England on a mysterious errand, he thinks it's a waste of Special Branch's time and resources. But when kidnappers manage to reach Sofia murdering two of her companions in the process. Pitt learns that the message the lovely evangelist was meant to deliver was far more urgent than he knew....

When the bodies of two high-profile women are discovered, bearing signs of rape, and an innocent man is accused of the crime, Thomas Pitt's quest for the truth forces him to play a dangerous game of international politics and murder.

Special Branch officer Thomas Pitt, hastening to rendezvous with a secret informant, arrives a second too late, preceded by a knife-wielding assassin. As he pursues the killer and the information he needs to stop a devastating plot against the British government, his clever wife Charlotte heads to Dublin to investigate a case involving Pitt's supervisor, Victor Narraway.