In the Season 4 finale, co-hosts Lydia CoffeeMaté and Jeffrey Dalmer discuss what we've learned after a deep dive into the story behind the 1989 Judd Nelson serial killer film, "Relentless." In airing his theory about "Relentless" director William Lustig's connection to mind control program MK-Ultra, Dalmer puts himself in the CIA's crosshairs, with dire results.

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Credits:

Erin Murray played Lydia CoffeeMaté. Erin performs with Madeline, a Washington Improv Theater house ensemble, and The Lodge. Follow her on Instagram at @eurniebmurray.

Jamal Newman played Jeffrey Dalmer. Jamal performs with Lena Dunham and NIXON. You can follow him on Instagram and Twitter at @hell0newman, and find him at jamalnewman.com.

Produced by Tim Townsend.

Theme music by Bart Warshaw.

Cover art by Claire Smalley.

Website by Chance Griffin.

Website artwork by Nicole Bennett.

With O'Boisies, Pizzarias, and Tato Skins, flavor architect Rosemary Caraway was winning awards in the 1980s for her work on the Keebler Company’s savory line of snacks. But when the company began favoring its sweet line instead, the “Relentless”-inspired Snack Aisle Strangler struck.

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Credits:

Erica Johnson played Rosemary Caraway. Erica performs with Washington Improv Theater house ensemble Lena Dunham.

Erin Murray played Lydia CoffeeMaté. Erin performs with Madeline, a Washington Improv Theater house ensemble, and The Lodge. Follow her on Instagram at @eurniebmurray.

Produced by Tim Townsend.

Theme music by Bart Warshaw.

Cover art by Claire Smalley.

Website by Chance Griffin.

Website artwork by Nicole Bennett.

Some "Relentless"-inspired would-be serial killers have been celebrities. When Marrissa Horn, a tea shop owner from L.A. began dating SisQó, she had no idea that a visit to Victoria's Secret together would inspire the R&B legend's greatest hit, nor that he might try to use the song as a murder weapon.

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Credits:

Andrea Quach played Marrissa Horn. Andrea is a member of The Quitters and Washington Improv Theater ensemble team The Lineup. Follow her on Instagram @andy___q.

Jamal Newman played Jeffrey Dalmer. Jamal performs with Lena Dunham and NIXON. You can follow him on Instagram and Twitter at @hell0newman, and find him at jamalnewman.com.

Produced by Tim Townsend.

Theme music by Bart Warshaw.

Cover art by Claire Smalley.

Website by Chance Griffin.

Website artwork by Nicole Bennett.

Growing up on the road alongside her saleswoman mom, Jeri Jones believed she had a serene, peace-loving nature. But then, at 15, she watched "Relentless" and a something savage began stirring inside her. Armed with common household implements as agents of mischief and with a Rolodex she found while Dumpster diving as a guide, her rampage began.

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Credits:

Jenny Koch played Jeri Jones. Jenny performs with Washington, D.C. improv teams The Quitters and The Lodge.

Erin Murray played Lydia CoffeeMaté. Erin performs with Madeline, a Washington Improv Theater house ensemble, and The Lodge. Follow her on Instagram at @eurniebmurray.

Produced by Tim Townsend.

Theme music by Bart Warshaw.

Cover art by Claire Smalley.

Website by Chance Griffin.

Website artwork by Nicole Bennett.

Around the time Darrell Klep first saw "Relentless" in the late 1980s, he also began his career as a farmer. Eventually, he started working weekend farmer's markets, following his customers and sitting in his car outside their homes. Creepy? Yes. Coincidence? Probably not.

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Credits:

Sean Paul Ellis played Darrell Klep. Sean performs with Washington Improv Theater ensemble team Nox! Check out his podcasts "Saturday Mourning Cartoons" where we reviews cartoons from your childhood with a critical adult lens. And "The Bureau," an improvised FBI podcast. Follow him on Instagram and Twitter at @seanpaulellis.

Jamal Newman played Jeffrey Dalmer. Jamal performs with Lena Dunham and NIXON. You can follow him on Instagram and Twitter at @hell0newman, and find him at jamalnewman.com.

Produced by Tim Townsend.

Theme music by Bart Warshaw.

Cover art by Claire Smalley.

Website by Chance Griffin.

Website artwork by Nicole Bennett.

Baskin-Robbins greeter Alicia Nicely was just minding her own business, trying on a fitted purple sweatshirt at Gap, when she was attacked by a "Relentless"-inspired wanna-be serial killer. As happens in these situations, the attacker — Sarah Pinch — couldn't close the deal. But might there be an army of Sarah Pinches out there, stalking America's retail dressing rooms?

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Credits:

J.J. Jackson played Alicia Nicely. JJ performs with Press Play, Mystery Scarf and Washington Improv Theater ensemble team Poetic Resistance. She also runs a monthly improv jam for women called Bagelz & Jam.

Erin Murray played Lydia CoffeeMaté. Erin performs with Madeline, a Washington Improv Theater house ensemble, and The Lodge. Follow her on Instagram at @eurniebmurray.

Produced by Tim Townsend.

Theme music by Bart Warshaw.

Cover art by Claire Smalley.

Website by Chance Griffin.

Website artwork by Nicole Bennett.

Buffalo, NY musician Brad Meglin was playing Black Sabbath covers with his band The Buffalo Soldiers in 1988, when William Lustig inexplicably got up on stage, mid-song, and asked Brad to compose music “that would make people want to kill” for his coming movie, “Relentless.”

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Credits:

Bryan Jackson played Brad Meglin. Bryan produces “Pod Chef,” a podcast in which he and his co-hosts re-watch “Top Chef” and discuss it episode-by-episode. He also has a new series on the app Rizzle called “Obvious Twilight Zone” with his sketch team Total Smokeshow and is a writer for Pagliacci, part of the sketch comedy collective Boogiemanja. Follow him on Twitter at @notbryanjackson.

Jamal Newman played Jeffrey Dalmer. Jamal performs with Lena Dunham and NIXON. You can follow him on Instagram and Twitter at @hell0newman, and find him at jamalnewman.com.

Produced by Tim Townsend.

Theme music by Bart Warshaw.

Cover art by Claire Smalley.

Website by Chance Griffin.

Website artwork by Nicole Bennett.

Lance Bloomberg's father was a big influence on his son. There was the fascination with money and finance that Lance inherited, and there was also the violence. Beaten regularly as a child with an abacus, Lance would eventually teeter between a career in financial analysis and serial murder. Seeing "Relentless" nearly sealed the deal.

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Credits:

Slli’m Williams played Lance Bloomberg. Slli’m hosts the Enigma Variety show for The Cookout Collective. He performs with Washington Improv Theater ensembles Madeline and Poetic Resistance, along with indie teams Revelry and Earth Wind and Tired. Follow him on Instagram @BigSllim.

Erin Murray played Lydia CoffeeMaté. Erin performs with Madeline, a Washington Improv Theater house ensemble, and The Lodge. Follow her on Instagram at @eurniebmurray.

Produced by Tim Townsend.

Theme music by Bart Warshaw.

Cover art by Claire Smalley.

Website by Chance Griffin.

Website artwork by Nicole Bennett.