Newlyweds Parker and Madeline move into their dream home. As they settle in, they discover a box of old love letters written to the original owner. And as the couple digs into the increasingly obsessive correspondence, a mysterious woman arrives with a horrifying secret that threatens their lives.

During a bachelorette party in a secluded California farmhouse, masked intruders launch a brutal attack, forcing eight women to fight for survival. Led by Tess, a troubled military veteran, they unite to defend themselves throughout a harrowing night.

When his wife and children are murdered after witnessing a mob hit, an FBI agent becomes judge, jury and executioner.