Dr. Erik Swenson, Professor of Psychology at State University, uses his professional skills in sorting out the mystery surrounding three genetically identical young men, one of whom is a psychopathic killer. The killer cleverly conceals his own identity while pointing the clues to his crimes in the direction of his two identical brothers who do not know of the existence of their psychotic sibling. The killer telephones Dr. Swenson's wife, Jennifer, and forces her to go with him to a seedy motel where he plans to trick Dr. Swenson into meeting them there. He intends to kill Dr. Swenson, then rape his wife. However, Dr. Swenson anticipates the trap and turns the tables on the psychopathic killer. [from publisher's web site]