J. E. Mayer is a practicing clinical and forensic psychologist specializing in the treatment of violent teens. He consults to law enforcement agencies and is an expert witness on criminal activity among teens and young adults. He is the author of Shadow Warrior, a thriller that has been optioned by 4C Films and is being made into a major motion picture, and Immortal: The First Tango, a romantic suspense novel. He also writes scripts and screenplays. For more information, visit jemayerbooks.com or follow the author on Twitter @jemayerbooks.