The Blueprint of a Monster: Mack Ray Edwards episode artwork

EPISODE · Jun 14, 2026 · 8 MIN

The Blueprint of a Monster: Mack Ray Edwards

from Histories of Horror · host Sai Marie Johnson and AL Knuckles

In the 1950s and 60s, the streets of Los Angeles were gripped by a hidden terror as a serial killer preyed on young children using a terrifyingly specific pattern—hiding them right beneath the city's rapidly expanding infrastructure.In this episode, Sai & AL explore the details of this haunting story. They dive into the heartbreaking victims, the shocking confession that stunned the LAPD, and the chilling geographical reality of a monster who used heavy machinery to bury his secrets deep under the California freeways.Edwards famously boasted his victims would never be found, because "no one would tear up a freeway."The HOH community is facing two major situations, and we are asking for your support to help us keep moving forward:AL is still recovering from surgery. This is a heavy physical and financial burden, and we want to surround her with as much relief as possible. Please consider contributing to her GoFundMe to help cover medical costs and recovery.⁠⁠⁠⁠⁠Support AL's GoFundMe here!⁠⁠⁠⁠⁠Sai Marie got unlawfully arrested in Los Angeles on March 28th while on assignment representing the Authors of the Resistance at No Kings LA. However, being "boots on the ground" came with additional daily costs, and after being arrested and freed with no charges due to being press, Sai was mistreated and abused - forced to crawl into the paddy wagon when she never should have been detained in press gear. She is seeking support for her legal fight and travel expenses so she can focus entirely on the mission while there.If you value the work being done here and want to help fuel this trip, please consider sending a gift through any of the following:⁠⁠⁠⁠⁠Venmo⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠CashApp⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠BuyMeACoffee⁠⁠⁠⁠⁠Every pillar you can offer—whether a donation or a share—makes a massive difference in our ability to stay independent and vocal. Thank you, as always, for all your help and support!

In the 1950s and 60s, the streets of Los Angeles were gripped by a hidden terror as a serial killer preyed on young children using a terrifyingly specific pattern—hiding them right beneath the city's rapidly expanding infrastructure.In this episode, Sai & AL explore the details of this haunting story. They dive into the heartbreaking victims, the shocking confession that stunned the LAPD, and the chilling geographical reality of a monster who used heavy machinery to bury his secrets deep under the California freeways.Edwards famously boasted his victims would never be found, because "no one would tear up a freeway."The HOH community is facing two major situations, and we are asking for your support to help us keep moving forward:AL is still recovering from surgery. This is a heavy physical and financial burden, and we want to surround her with as much relief as possible. Please consider contributing to her GoFundMe to help cover medical costs and recovery.⁠⁠⁠⁠⁠Support AL's GoFundMe here!⁠⁠⁠⁠⁠Sai Marie got unlawfully arrested in Los Angeles on March 28th while on assignment representing the Authors of the Resistance at No Kings LA. However, being "boots on the ground" came with additional daily costs, and after being arrested and freed with no charges due to being press, Sai was mistreated and abused - forced to crawl into the paddy wagon when she never should have been detained in press gear. She is seeking support for her legal fight and travel expenses so she can focus entirely on the mission while there.If you value the work being done here and want to help fuel this trip, please consider sending a gift through any of the following:⁠⁠⁠⁠⁠Venmo⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠CashApp⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠BuyMeACoffee⁠⁠⁠⁠⁠Every pillar you can offer—whether a donation or a share—makes a massive difference in our ability to stay independent and vocal. Thank you, as always, for all your help and support!

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The Blueprint of a Monster: Mack Ray Edwards

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How long is this episode of Histories of Horror?

This episode is 8 minutes long.

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This episode was published on June 14, 2026.

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In the 1950s and 60s, the streets of Los Angeles were gripped by a hidden terror as a serial killer preyed on young children using a terrifyingly specific pattern—hiding them right beneath the city's rapidly expanding infrastructure.In this episode,...

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