What's worse than a serial killer on the loose? How about twin serial killers? While Casanova and The Gentleman Caller are not blood brothers, psychologist/detective Alex Cross explains twinning to show how they work together to pull off their grisly crimes. When Cross's niece becomes the latest victim, he uses his research on twinning to catch the killers. This three-hour abridgment is riveting. Macabre sound effects, careful editing and chilling performances by Guillaume and Noth produce a viseral reaction in the listener. Though complicated and fast-paced, the story is easy to follow and hard to forget.