The Lolita Man (Harpur and Iles Series #2)

Harpur matches wits with a deadly killer: the "Lolita Man."
Five teenage girls have been raped and murdered, and the criminal is still at large. Detective Chief Superintendent Colin Harpur, assigned to the case, is a tough hunter, but so is "the Lolita man," watching the schoolyards. Now it looks as if the daughter of Harpur's friend may be the latest victim. Virtually obsessed with the urgency of the matter, and hampered by the bitter police rivalry that is jeopardizing the case, Harpur decides to go it alone.