Stingray

the long version

A vile act of betrayal by his twin brother, Sean, leaves James Mallory amnesic - all memory of his terrorist past erased ... Terrorist operation Stingray nears its climax and Trader of MI5, investigating the Mallory brothers' history, discovers a grim secret; this information could help him gain access to the mission's detailed plans. However, he needs the co-operation of Steven Court, aka James Mallory ... Forty-eight hours before Stingray's climax, Trader contacts Court - will he assist? Or if, as a former terrorist, he refuses - four British cities will suffer the death and destruction wrought by gunmen and suicide bombers.