10 Works in Serial Killer Agatha Harkness
Listing Works
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Agatha inspects Rio with predatory eyes, eyes that are shrewd, starving. She's a murderer, Rio thinks - but she doesn't fight. She stays perfectly still as Agatha leans in. Stays still as she runs her lips up the curve of Rio's neck, feather-light and agonizing.
"Don't you want me to have fun with you?" Agatha murmurs, breath warm in her ear.
FBI Agent Rio Vidal is obsessed with hunting down serial killer Agatha Harkness. Unfortunately for her, the feeling is mutual:
Agatha's a lit match, and Rio's got a whole life ready to burn.
A Killing Eve-style AU.
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J'sais Pas Si Je T'aime (I don't know if I love you) by InstaCarma
Fandoms: Agatha All Along (TV), Marvel Cinematic Universe, Marvel
03 Sep 2025
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She thumbed through the pages with mild interest, mostly unconcerned with this case. It technically wasn't even hers, it was Agent Vidal's, but chief asked her to look over it and see if she spotted any extra clues since these killings had been going on for over a year. They'd been happening for way longer than a year.
Seven years.
Each year, seven kids were saved.
Each year, parents or guardians who didn't deserve children were murdered.
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“Hey darling,” she says, the very obviously fake southern drawl hitting Rio right in the cunt.
That’s when Rio notices, the red and black checkered shirt tied to sit under her tits with her black lacy bra practically forcing Rio to look at them.
The brunette clears her throat, “Eyes up here pretty boy, caught you staring so assume you’ve stopped to pick me up?”
Before Rio can even contemplate making a decision the brunette is climbing up the steps beside them.
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Butch Trucker Rio Vidal x Hot Serial Killer Agatha Harkness
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Where I Go, You Follow by Jennifer-Oksana (JenniferOksana)
Fandoms: Agatha All Along (TV)
09 Jun 2025
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Once upon a time, many years ago, in a colony by the sea, a teenage serial killer with powers beyond her understanding accidentally summoned Death. And Death fell in love without understanding the absolute horror of that. A slow burn first time Agatha/Rio with a lot of musing on the slow horror of what happens when an infinite being falls head over heels with a very young woman who is dealing with her own nature. (Teen to Mature, first couple of chapters, smut will happen)
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This is a little like the Joker/Harley theme, but not really. Agatha is obviously the infamous criminal and Rio is the young and naive therapist.
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Rio Vidal owns a flower shop that serves as a cover for her poison trafficking business. Her life is good, comfortable even, until she accidentally stumbles into Agatha Harkness' bush. Literal bush, with leaves and everything. That would be totally fine, except she knows Agatha Harkness. They used to murder people together when they were teenagers. And date. Now, 22 years after their break up, Rio becomes determined to win Agatha back, no matter what.
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Death by Thy Side by RickyRiddle
Fandoms: Agatha All Along (TV), Marvel Cinematic Universe
19 Feb 2025
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Agent Rio Vidal is a forensic investigator working for the FBI. After investigating what seems to be a drowning accident involving four dead bodies, she became convinced there is a serial killer on the loose. This leads her to meet the charismatic yet mysterious Doctor Agatha Harkness.
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To catch a wanted killer
She'll have to enter the mind of not just one but two predators.
One is on the run playing the fbi enjoying the chase, and the other is in the cell willingly giving information for a price.
A price that involves Rio Vidal. -
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FBI trainee Rio Vidal must enlist the help of imprisoned Dr. Agatha Harkness, psychologist and infamous serial killer, in order to catch an active murderer. What happens next is anyone's game.
Inspired by The Silence of the Lambs.
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your relationship was picture perfect. you're happy and in love but one crime scene brings your love crashing down around you