Understanding Teen Killer's Mind: Your Questions Answered

Forensic psychiatrist Dr. Michael Welner answers questions about Jovan Collier.

ByABC News
November 16, 2010, 3:54 PM

Nov. 16, 2010— -- Jovan Collier was able to keep a dark secret: He had killed his adoptive parents and younger brother when he was 14 years old. For years, he lived under another name and led a seemingly normal life, until his deep-seated rage was awakened. Collier began to aggressively stalk his ex-fiancee -- vandalizing her home, allegedly threatening her, even sending her a dead piglet. Collier is now serving time in a Florida prison for aggravated stalking.

Forensic psychiatrist Dr. Michael Welner, who has not treated Collier, offers an expert perspective on the case, and answered viewers' questions about Collier's strange behavior.