Experts — and famous family slayings — offer clues.See omnystudio.com/listener for privacy information.

Jon offers $5K for missing items — including Robert's gun.See omnystudio.com/listener for privacy information.

We explore underground caves in Arizona.See omnystudio.com/listener for privacy information.

Robert's friend Ashley speaks for the first time.See omnystudio.com/listener for privacy information.

Robert Fisher is nowhere, everywhere, all at once.See omnystudio.com/listener for privacy information.

Years fly by. Myths solidify. Time to bust them.See omnystudio.com/listener for privacy information.

We examine forensic evidence and alternate suspects.See omnystudio.com/listener for privacy information.

A house explodes. Police find three bodies. A father disappears.See omnystudio.com/listener for privacy information.

Arizona's governor can fund a $10K reward — if she wants.See omnystudio.com/listener for privacy information.

Jon offers a $10k reward.See omnystudio.com/listener for privacy information.