‘Hell on Wheels’ killer Mackenzie Shirilla is the ‘Mean Girl’ of her prison — and took multiple lovers, inmate says
Mackenzie Shirilla, known as the 'Hell on Wheels' killer, is portrayed differently by a former inmate than in the Netflix documentary 'The Crash.' While the documentary shows her expressing remorse, the former inmate describes her as a 'Mean Girl' who enjoyed a glamorous prison life. Shirilla reportedly engaged in relationships with other inmates and presented herself as a prison celebrity.
- ▪Mackenzie Shirilla is serving two concurrent 15-to-life sentences for killing two people in a car crash.
- ▪A former inmate described her as the 'Regina George of prison,' indicating she acted like a popular figure among inmates.
- ▪Shirilla reportedly maintained a glamorous appearance and engaged in relationships with other women while incarcerated.
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US News exclusive ‘Hell on Wheels’ killer Mackenzie Shirilla is the ‘Mean Girl’ of her prison — and took multiple lovers, inmate says By Georgia Worrell Published May 20, 2026, 7:00 a.m. ET See more of our coverage in your search results. Add The New York Post on Google “Hell on wheels” killer Mackenzie Shirilla is nothing like the remorseful, hardened prison inmate depicted in the hit Netflix doc, a former inmate said. “When she walked out in the documentary my jaw literally dropped, because her demeanor and the way that she looked was nothing like the person I was in there with,” Mary Katherine Crowder, who served time with Shirilla at Ohio Reformatory for Women, told The Post.
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