Serial killers come from different backgrounds, attain different levels of education, and hold various types of jobs. However, many serial killers do have at least one thing in common: the desire to communicate regarding their crimes. Killers from Jack the Ripper to the Son of Sam often provide clues to their identities, their motives--even their future targets--through crime scene notes, letters to the media, calls to police, messages scrawled on victims, and, increasingly, email and other technology. Here, Gibson takes a look at ten notorious serial killers, their crimes, their victims, and their communications to uncover new insights into the minds of these unusual and dangerous people.