Guest: Kenyon Wallace, investigative reporter

Malcom Madsen went missing in Mexico in 2018, and when the authorities did little to pursue an investigation, his daughter, Brooke Mullins, took matters into her own hands. What followed was a true crime tale of private investigation, damning evidence and dealing with the varying interests of authority figures in a search for justice.

This episode was produced by Brian Bradley, Paulo Marques and Raju Mudhar.