The sudden arrival of violence

the long version

"It begins with two deaths: a money-man and a police informant. Deaths that offer a unique opportunity to a man like Calum MacLean. A hit man who has finally had enough of killing. Calum plans an unprecedented escape just as his employers need him the most. Glasgow's biggest criminal organizations are gearing up for a final, fatal confrontation. The panic over Calum's abrupt disappearance may finally give Detective Michael Fisher the chance he need to close the case of a lifetime. But first, he must track down a man who has become a master of disappearance. A man who has staked his life on staying in the shadows" --