A Commonplace Killing

London, July 1946. A woman's body is found in a disused bomb site off the Holloway Road. She is identified as Lillian Frobisher, 'a respectable wife and mother' who lived with her family nearby. The police assume that Lillian must have been the victim of a sexual assault; but when the autopsy finds no evidence of rape, they turn their attention to her private life... How did she come to be in the bomb site, a well-known lovers' haunt? Why was her husband seemingly unaware that she'd failed to come home on the night she was killed?