A killer intoxicated by pain. Should Alex Madison stop her--or save her? Across London, hospital patients are dying--in shockingly unnatural circumstances. A sadistic young woman is targeting them as they lie helpless in their beds, eking out every last sensation of pain as their lives ebb to an excruciating close. The killer is a sadist, but careful too, so the police bring in forensic psychologist Dr Alex Madison to track down...