Strontium Dog//Volume Six. (2000 AD The Ultimate Collection, #9).

Against his wishes, search/destroy agent Johnny Alpha has been partnered with the untrustworthy, blood-hungry Durham Red to look into the killings of fellow mutants by a band a freelance Granulan mercenaries called The Stones. Caught between a rock and a hard place, he’s going to have to watch his back, or else someone’s going to get squashed.... More thrilling action from the Strontium Dog universe by writers John Wagner (A History of Violence) and Alan Grant (Batman), and artists Carlos Ezquerra (Judge Dredd) and Simon Harrison (Revere)!