Sidney Allen is a Fed. Part of the Australian Federal Police's K block, a unit doing whatever it takes in order to stop terrorist attacks on home soil.
But when young Muslim men on the Terror Watchlist start turning up dead, Sid and his partner, Haifa, have to work out what's going on.
Sectarian war? Drugs? Retribution? For Sid, there's nothing unclear about a bullet to the head and a severed hand. Someone is sending a message.