As the hunt for Brian Laundrie continues, questions multiply concerning the fugitive's parents. What did they know regarding the death of 22-year-old Gabby Petito and when did they know it? The big question right now: Did Brian Laundrie's mom know that Gabby would never come home?

Plus, a Montana tourist reports a strange interaction he and his companions had with a man matching Laundrie's description at a West Yellowstone, Montana bar.

Also, Duane ‘Dog the Bounty Hunter’ Chapman has discovered a campsite and fresh energy drink can deep in the woods while searching Shell Island off the coast of Florida for Brian Laundrie. Could this piece of metal hold valuable information for investigators?

Joining Nancy Grace today:

• Hunter Mannies - Witness who claims he saw Brian Laundrie in a bar near Yellowstone National Park
• Ben Levitan - Telecommunications Expert, Wireless, Cellular, PCS, Internet and Telephony, benlevitan.com
• Matthew Mangino - Attorney, Former District Attorney (Lawrence County), Author: "The Executioner's Toll: The Crimes, Arrests, Trials, Appeals, Last Meals, Final Words and Executions of 46 Persons in the United States"
• Dr. Shari Schwartz - Forensic Psychologist (specializing in Capital Mitigation and Victim Advocacy), www.panthermitigation.com, Twitter: https://twitter.com/TrialDoc, Author: "Criminal Behavior" and "Where Law and Psychology Intersect: Issues in Legal Psychology"
• 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"