Sean Lannon says he murdered 16 people, including his ex-wife and a former mentor who allegedly sexually abused him as a child. Lannon allegedly enticed four of the victims to a residence in New Mexico before killing and dismembering wo of them. Authorities have tied Lannon to the March 5 discovery of four bodies in a parking garage at the Albuquerque International Sunport airport. Joining Nancy Grace Today:Dasie Castillo - Aunt of Matthew Miller (21-year-old victim), GoFundMe: Search "Mathew Millers Services" Dale Carson - Criminal Defense Attorney (Jacksonville), Former FBI Agent, Former Police Officer, Author: "Arrest-Proof Yourself" Dr. Bethany Marshall - Psychoanalyst, www.drbethanymarshall.com, New Netflix show: 'Bling Empire'  Sheryl McCollum - Forensic Expert & Cold Case Investigative Research Institute Founder Dr. Michelle Dupre - Forensic Pathologist and former Medical Examiner, Author: “Homicide Investigation Field Guide” & "Investigating Child Abuse Field Guide", Ret. Police Detective Lexington County Sheriff’s Department Levi Page - Crime Online Investigative Reporter, Host, "Crime and Scandal" True Crime Podcast, YouTube.com/LeviPageTV