Former SAS trooper Dan Shepherd, now a detective in an elite undercover squad, is at the center of these hard-hitting, high-action thrillers from Stephen Leather. Scalpel-sharp suspense and as gritty as the genre gets.

When a group of armed police in an elite unit turn maverick and begin ripping off drug dealers at gunpoint, undercover cop Dan "Spider" Shepherd is given his most dangerous assignment yet. His orders are to infiltrate the tight-knit team, gain their confidence, and ultimately betray them. Facing men with guns is nothing new for the former SAS trooper, but it's the first time he's had to investigate his own. As Shepherd finds himself on the firing line, he has to decide exactly where his loyalties lie.