Dark Literature Featuring Fiendish Friends to the Bitter End

Sometimes ride or die is romantic. In these six horror novels, it’s literal.


By Jena Brown   |  Updated September 2, 2025

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Female friendship is one of the most complicated relationships around. Psychologically, it makes sense that women bond on a deeper level with other women. Where men tend to focus on mutual interests and shared activities, women lay the foundation of their friendships on emotional connection. We nurture. We care. Where boys play sports and roughhouse, girls share secrets and dreams. Female friendships are intimate by nature. And that’s what makes them so volatile.

When female friendships are healthy, they strengthen and uplift. But when they’re toxic, they destroy. It’s a fine line between love and hate, admiration and jealousy, interest and obsession. And at some point, many female friendships dance the dangerous line atop those sharp edges. Here are six horror tales where female friendship crosses the line from friendly to absolutely deadly.

Jawbone Book Cover




Nothing can tear Fernanda and Annelise apart. The pair are practically sisters. They’re inseparable, held together by affection and a dark secret. But when the two attend the Delta Bilingual Academy, they lead their friends in afternoon dares that become increasingly dangerous. It all ends with Fernanda tied up and held hostage by a teacher barely holding onto sanity. And Annelise? She’s nowhere to be found.

Things Have Gotten Worse Since We Last Spoke And Other Misfortunes Book Cover


Sometimes the most intense friendships come from the unlikeliest of places. Agnes never expected to meet anyone in an online forum selling her antique apple peeler. But when Zoe replies the two women quickly start exchanging emails. From there, things get worse. It’s a deadly combination of loneliness and obsession that devolves into absolute madness. When a stranger on the internet asks what you’ve done today to deserve your eyes, you should never ever tell them.

My Best Friend's Exorcism Book Cover


It’s only natural to outgrow your childhood friends. After all, high school might as well be a whole new universe compared to grade school. But Abby knows that when her best friend Gretchen starts acting strange it isn’t because they’re drifting apart. The only explanation that makes sense is that Gretchen is possessed. And there’s no way she’s letting a demon get between them.

With a gang of unlikely allies, Abby sets out to prove that their friendship is so strong that it can even beat the devil.

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Love You To Death Book Cover


We all have that one friend from our past. The one who got us in more trouble than we ever thought possible. Zorie is that friend for Kayla. But for all the trouble that she and Zorie got into, Zorie is the one who stuck by her side. So, when their wedding crashing turns deadly, Kayla doesn’t have a choice but to follow Zorie’s lead. But the longer she’s on the run with Zorie, the more Kayla starts to realize that she might not know her best friend at all. And this is one road trip that the two women may not survive.

Followers Book Cover




Orla and Floss just happened to be at the right place and the right time for a friendship to blossom. And when Floss promises that she can help them both reach their dreams? It’s an offer Orla can’t afford to refuse.

Thirty-five years later, Marlow discovers that her entire family history is based on a lie. As the two women build the platforms that will launch them into the fame they so vehemently want, the only question is how far they’re willing to go and who they’re willing to hurt to keep it.

Social Creature Book Cover


When does friendship turn toxic? That’s the question Louise and Lavinia struggle with. There’s always a bit of jealousy between the two. After all, Lavinia has everything, where Louise has nothing. And sure, Lavinia sees them as equals. But when everything comes so easily to her and Louise has to work so hard for so little, it’s only so long before affection turns rotten. And when one of them ends up dead, the truth is as complicated as the friendship.

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