As the fourth novel in the Factory series opens, young prostitute Dora Suarez is axed into pieces. The killer then smashes the head of her friend, an 86-year-old widow. On the same night, a mile away in the West End, a shotgun blows the top off the head of Felix Roatta, part-owner of the seedy Parallel Club. As the detective obsesses with the young woman whose murder he investigates, he discovers that her death is even more bizarre than he had suspected: the murderer ate bits of flesh from Suarez’s corpse and ejaculated against her thigh. Autopsy results accrue the revulsion as they compound the puzzle: Suarez was dying of AIDS, but the pathologist is unable to determine how she had contracted HIV. Then a photo, supplied by a former Parallel hostess, links Suarez to Roatta, and inquiries at the nightclub reveal her vile and inhuman exploitation.

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Derek Raymond (born Robert William Arthur Cook) (12 June 1931 - 30 July 1994) was an English writer, credited with being the founder of English noir.

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