Dungeon Royale (Masters and Mercenaries Series #6)

An agent broken MI6 agent Damon Knight prided himself on always being in control. His missions were executed with cold, calculating precision. His club, The Garden, was run with an equally ordered and detached decadence. But his perfect world was shattered by one bullet, fired from the gun of his former partner. That betrayal almost cost him his life and ruined his career. His handlers want him to retire, threatening to revoke his license to kill if he doesn't drop his obsession with a shad...