Lt. Sean Williamson's death in a Philadelphia building collapse is one of the most preventable true crime cases we've covered. The fire was out. He was inside checking the structure — then three stories came down on six people.

Built from 466 pages of federal court documents, this episode reveals how building owner Al-Ashraf Khalil set fire to his own pizza shop for an insurance payout, texted his accomplice "Bro one fireman died" at 5:25 AM, signed the insurance claim the same day, then boarded a plane to Jordan.

Khalil is now serving 40 years in federal prison. Court documents are sent exclusively to subscribers when episodes drop — subscribe now at https://truecrimeunheard.com/subscribe so you don't miss future case files.