Moonsick

The Last of Us meets Teen Wolf in this fast-paced horror debut about a young woman who realizes she's been turned into a werewolf and must choose to turn herself in or live a life on the run.

High school senior Heidi Mills seemingly has it all: a charming (albeit pompous) boyfriend, loving (wealthy) parents, and an acceptance letter to Harvard (well, not yet). With her mom and stepdad away on vacation, this weekend she's going to host a rager at their mansion to celebrate the end of high school. There's just one catch: she has to make it through the next 24 hours. The full moon is coming tonight, and the worldwide werewolf epidemic that's been running rampant for the past few years will awake those who are infected.

Safe in her home, with its state-of-the-art lockdown system to keep the monsters out, Heidi expects to wait out the night. But when two intruders show up to loot what they think will be an empty home, the life of privilege, ease, and safety that Heidi has taken for granted comes crashing down. Suddenly exposed to the realities of this virus and the way that the rest of the world has been living all this time, Heidi embarks on a dark adventure accompanied by the mysterious-- but alluring--boy who broke into her house. But as she fights to survive the underbelly of a post-pandemic society, she'll learn that not all monsters have fangs.

With flourishes of Wes Craven and The Purge, this horror novel is perfect for fans of Gradie Hendrix, Adam Cesare, and things that go growl in the night.

Author: Tom O'Donnell
Publisher: Wednesday Books
Published: 09/23/2025
Pages: 352
Binding Type: Paperback
Weight: 0.69lbs
Size: 8.21h x 5.49w x 0.93d
ISBN: 9781250353092
Audience: Young Adult


Review Citation(s):
Booklist 09/01/2025
Kirkus Reviews 09/15/2025

About the Author
TOM O'DONNELL is the author of the HOMEROOMS & HALL PASSES and HAMSTERSAURUS REX book series. He's written for The New Yorker and McSweeney's and for film and TV. Repped by Verve Talent & Literary and Circle of Confusion.