There's Someone Inside Your House by S. Perkins

• Makani Young grew up in Hawaii but has moved in with her grandmother in small-town Nebraska in order to escape her past.
  
• She's made some friends and has a crush on cute loner Ollie that is just starting to develop into something more when a serial killer begins targeting her classmates.
  
• As the grisly murders pile up, Makani starts to wonder if she'll be the next victim -- and also if she just might know the killer's identity.

Romance + mystery + slasher plot = a fun, gory read.

Grades 9-12