A vile act of betrayal by his twin brother leaves James Mallory amnesic, all memory of his terrorist past wiped out; while Sean was never the man to look a gift horse in the mouth. As terrorist operation Stingray nears its climax, Trader of MI5, investigating the past life of the Mallory brothers, discovers a grim secret.

A vile act of betrayal by his twin brother leaves James Mallory amnesic, all memory of his terrorist past wiped out; while Sean was never the man to look a gift horse in the mouth. As terrorist operation Stingray nears its climax, Trader of MI5, investigating the past life of the Mallory brothers, discovers a grim secret - and realises there's a way he might use it to gain access to the detailed plans of the mission. But to achieve that he needs the co-operation of one man: Steven Court, in the past aka James Mallory...With only 48 hours left before Stingray's climax, Trader asks Steven Court for that help. Will Steven give it? Or will he revert to his former terrorist persona and refuse it - thereby condemning 4 British cities to suffer the death and destruction brought about by gunmen and suicide bombers?