Mercy by David L. Lindsey (Hardback) 1990

Mercy by David L. Lindsey (Hardback) 1990. Doubleday & Company. Does not have dust jacket. 512 pages. When two women are found murdered, female detective Sander Grant is drawn into two strange worlds--the underground world of bisexuality and sadomasochism, and the twisted, sick world of the killer. Based on research with the FBI's Behavioral Science Unit.