Three-time Emmy award-winning investigative reporter Mark Pettit returns to write the final chapter in his best-selling and now newly updated book - A Need to Kill: The Death Row Drawings.

Dramatic and chilling new evidence comes to light exposing the sinister thoughts running through the mind of John Joubert - the man behind the brutal murders of two young boys in Nebraska. In the spirit of Truman Capote's In Cold Blood, Pettit delves into the Joubert case to tell the dramatic story from all angles as a nonfiction novel. In a series of exclusive, face-to-face interviews with Pettit, Joubert admits to a string of violent crimes and another killing that sends investigators into a frenzy ending with Joubert being convicted for a third murder and ultimately executed in Nebraska's electric chair.

Now, Pettit uncovers shocking new evidence from Joubert's prison records proving the killer was fantasizing about committing more violent crimes. Never-before-seen death row drawings made by Joubert while he waited to be executed once again send a chill through Nebraska and those touched by Joubert's horrific crimes.

In the updated version of his book, Pettit opens his investigative files to the public, sharing never-before-seen evidence. Pettit reveals aspects of Joubert's personality from exclusive interviews and details from the death row discussions that have never been shared publicly. Criminal profiler Keith Howard - who has investigated more than 1,000 crimes - weighs in with a dramatic assessment of the death row drawings, calling Joubert as a "sexual sadist, pedophile and organized killer". Howard's full assessment of Joubert is included in the book.

Pettit is a 25-year veteran journalist. A former anchor at CNN, Pettit also worked as an anchor and investigative reporter at WXIA-TV (NBC) in Atlanta and KMTV-3 (CBS) in Omaha. Pettit is currently a special assignment reporter for CBS46 News (WGCL-TV) in Atlanta.