New Scotland Yard's aristocratic Acting Superintendent Thomas Lynley and working-class Constable Barbara Havers (she's been reduced in rank, basically for sheer bloody-mindedness) of first suspect a serial killer is at work when the corpse of a teenage boy is found on top of a tomb. Their hopes of preventing a second death are shattered when a review of open cases finds three similar crime scenes. The first three victims, however, differed from the fourth in being nonwhite. When Lynley's antagonistic superior realizes that the department will be accused of racism for failing to solve the earlier crimes, his method of damage control infuriates Lynley and impedes work on the case.

One of Lynley's best investigators, who is black, is diverted to handling press conferences and replaced by a profiler Lynley doesn't want. And, worst of all, a reporter is embedded with the team.and his feature about Lynley almost draws a map to the house Lynley shares with his pregnant wife. Struggling to keep their focus on the crimes, Lynley and Havers find a disturbing connection to an organization named Colossus that serves troubled youths. Despite a cover-up by the director, they learn that all four of the dead boys spent time there. Then there is a fifth similar death, although closer investigation reveals that it deviates from the previous pattern in several disturbing ways. Is the killer changing his habits in an effort to stump the police, or has someone else stepped beyond the bounds of justice and humanity? New York Times-bestselling author Elizabeth George's story of police work in London is a taut tale of dogged perseverance and brilliant intuition. Sue Stone