10 Existential Horror Novels to Make You Question Everything

Private investigator John Persons doesn’t think twice when a 10-year-old boy hires him to kill his abusive stepfather. As Pearsons looks into the case, though, it seems his target isn’t as human as he seems on the outside. And he’s infectious. Now Persons is up against an otherworldly monster before it unleashes something dark in him too.

When Anthony meets Emily in the library at his art school in Seattle, he’s immediately intrigued by her. His dreams after meeting her turn in the strange and bizarre world called Nightland as his obsession with her grows. Not even her claims that they’re both demons can deter his love for her.

After the government takes over Innsmouth and sends the People of the Water to camps in the desert, only Aphra Marsh and her brother Caleb survive. Years later, though, the government needs Aphra’s help to find the source of rumors that a Russian agent gained access to body-switching methods they could use to damage the United States. Aphra accepts the request if only to learn more about her family history and what they lost.

In the aftermath of a pandemic, the population is divided into those who survived and those who became zombies. As those uninfected fight to reclaim Manhattan from their safe space called Zone One, Mark Spitz and the other sweepers trying to clean out the city encounter a different kind of zombies stuck in the past and lingering in the places that were important to them once. As he works to make space for them to live again, he has to face a world with different rules and a different job for humanity.

Twelve contestants sign up for a reality TV show that will test their physical limits. With little information and a cash prize of $1 million, Zoo is among those who agrees to participate. Three weeks into filming, though, she stumbles on a body, but figures it’s all part of the psychological tests of the game. Then she finds more, and the world gets more and more uncertain as she realizes she might not have the safety of a crew and witnesses like she thought.

When street musician Charles “Tommy” Tester is roped into delivering a mysterious book to a woman, he jumps at the chance to make some extra money to take care of his dad. But the book makes him the target of two policemen, a plot to awaken a sleeping evil. While dealing with racism and police brutality, Tester is also plagued by an existential dread about capitalism and his place in the world.

Living on their isolated farm suits Junior and Hen just fine. But then a stranger arrives with a claim that the government has selected Junior to go to outer space. The stranger reassures them Hen will be taken care of, but neither of them are sure who to trust as things spiral out of control.

A screenwriter determined to write a sequel to his big-hit movie decides renting a house in the mountains is just the thing to beat his writer’s block. With his wife and their 4-year-old daughter, they enjoy the forest and the time away from their lives. But his solution doesn’t seem to be putting words on the page, and his family just might prove a bigger distraction than he can tolerate.

After one of the six avatars of New York is sent into a coma, the other five do their part fighting off the Enemy trying to take over the city. They’re all drawn to the sixth avatar whom they need to take up before their city crumbles. This homage to New York is full of love and purpose and the threat of losing it all.

After James’ gambling problems get the better of him, he and his wife Julie decide moving into a new place is just the ticket. But as strange blotches appear on the walls and bruises appear on their skin, they doubt moving was such a good idea. As they investigate, the house gets more and more confusing, with hidden spaces they hadn’t seen before.