When history teacher Bill Ripari offers his property for a school haunted house project, hairstylist Marla Vail volunteers to put the scare factor into the props' hair. She joins her stepdaughter along with other students, parents, and teachers to transform the wooded estate into a creepy attraction. Marla is busy creating decorations when she spies a splash of red on the estate grounds. Curiosity compels her to go outside for a closer look, but the dark stain isn't fake blood meant to be part of fright night. Instead, the trail leads straight to the history teacher's dead body.Worried about the kids, Marla puts on her sleuthing hat to investigate. She discovers every one of the volunteers present that night had a possible motive. Between slacker students, helicopter parents, unexpected heirs, and a stonewalling school administration, Marla has her hands full in solving the murder and keeping her stepdaughter safe.