There’s Someone Inside Your House by Stephanie Perkins

Makani’s parents send her to live with her grandmother in a small town in Nebraska after a dark incident in her home state of Hawaii. As she makes friends and begins a romance with a mysterious outsider named Ollie, someone starts murdering Makani’s classmates one-by-one. As the serial killer hunts the students of Osborne High, putting the town on high alert, Makani and her friends try to predict who the killer will hit next before he or she can strike again. Perkins’ novel is packed with the requisite gruesome murders, but alongside a heavy does of romance as Makani and Ollie’s relationship develops, and underpinning both is a coming-of-age story as Makani deals with her past in Hawaii. There’s Someone Inside Your House features a diverse cast and perfectly blends contemporary YA with YA horror packaged in a fast, thrilling read.