BOMBSHELL: Brian Laundrie Parents 'Forgot When He Left Home!'

Brian Laundrie's parents tell police that they were mistaken on the day Brian left to hike Carlton Reserve. Laundrie's parents originally said the last time they had seen their son was on September 14, when he told them he was going to hike, The family's attorney, Steven Bertolino, now says the parents "misremembered" the date, that Laundrie actually left on September 13th, a day earlier.

This new information comes as a former medical examiner says the FBI's decision to keep possession of Gabby Petito's remains and failure to release the cause of death is unusual. Retired New York City Chief Medical Examiner and forensic pathologist Michael Baden tells Fox News that he sees no reason to keep the "whole body" from the family. Currently, the remains are still in federal custody.

Joining Nancy Grace Today:Dale Carson - Criminal Defense Attorney (Jacksonville), Former FBI Agent, Former Police Officer, Author: "Arrest-Proof Yourself, DaleCarsonLaw.comDr. Bethany Marshall - Psychoanalyst, www.drbethanymarshall.com, New Netflix show: 'Bling Empire' (Beverly Hills)Sheryl McCollum - Forensic Expert & Cold Case Investigative Research Institute Founder, ColdCaseCrimes.org, Twitter: @ColdCaseTips Joe Scott Morgan - Professor of Forensics: Jacksonville State University, Author, "Blood Beneath My Feet", Host: "Body Bags with Joseph Scott Morgan"Mahsa Saeidi - Investigative Reporter, WFLA-TV (Tampa), Twitter/Instagram: @MahsaWho, Facebook: "WFLAMahsa"