Richard Morgan's debut SF thriller Altered Carbon isn't for the faint-hearted. Its noir private-eye investigation races through extreme violence, hideously imaginative torture and many high-tech firefights. In 2411, death is not forever. Afterward, they can read your personality from an implanted "cortical stack" and upload you into a new body--at a price. Hero Kovacs has worn many bodies on different worlds as a former member of the UN Envoy Corps, programmed killers to a man. Now the incredibly rich Bancroft brings him to Earth to investigate a killing... of Bancroft himself, restored from his digital backup and rejecting the police theory of suicide. Half the vice-lords of 25th-century San Francisco are soon chasing Kovacs with futuristic surveillance, drugs and weaponry. Virtual-reality interrogation means they can torture you to death, and then start again. There's a bleak slave trade in rented or confiscated bodies--and Kovacs finds his current borrowed face is all too well known to both police and underworld. Ultraviolent set-pieces follow, sprinkled with philosophical asides such as this reflection on a stungun: "It was the single forgiving phrase in the syntax of weaponry I had strapped around me. The rest were unequivocal sentences of death." There are some James-Bondian implausibilities, such as Kovacs's final confrontation with the villain he's sworn to kill: rather than shooting and leaving fast, he discusses the plot for 10 pages until... but that would be telling. This is high-tension SF action, hard to put down--though squeamish readers may shut their eyes rather frequently. --David Langford