Detective Inspector Peter Pascoe's dentist, who is used to seeing broken jaws and broken teeth, tells Pascoe that a scene in an X-rated film where a women is beaten is real, not staged. This leads Peter and his wife Ellie to check out the Calliope Kinema Club, a trendy venue for soft-core porn in an otherwise proper and well-to-do neighborhood.
Sergeant Wield already has the place under surveillance, due to neighborhood complaints and scandalized locals, but Wield and Pascoe's Boss Superintendant Dalziel is skeptical that anyone is guilty of anything more than voyeurism until an indisputable murder turns up the heat.
The books are labeled the Dalziel and Pascoe books, but I always think of them as the Peter Pascoe / Ellie Pascoe / Edgar Wield / Andy Dalziel books, and all four characters get to shine in this one. Not as innovative as most of the later books in the series, but still an excellent police procedural, and well as showing much of the sly humor and characterization that makes Hill's books such a delight.