Monica Rodriguez and Magdalena Salas research highlight similar serial killers, build a profile, and speak to Dr. Christian Lopez.

This episode is sponsored by DoorDash, Daily Harvest and Article.

The David Parker Ray background clip is from the Serial Killers Podcast.

Heads of Sierra Blanca is Executive Produced by Magdalena Salas, Monica Rodriguez, Gabrielle Ruiz, Alex Cline, Donald Albright, Alex Aldea, and Henry Tuten.

Hosted by Magdalena Salas and Monica Rodriguez

Edited by Victor Figueroa, Gabrielle Ruiz and Alex Aldea.

Sound Design by Victor Figueroa and Gabrielle Ruiz.

Music Composition by Alex Aldea and Andrew Joselyn.

Research by Henry Tuten, Magdalena Salas, Monica Rodriguez, and Alex Aldea.