A shocking discovery is made at St. Agnes on Valentine's Day: Lexi Summerveld is dead. The police claim an accident but drama teacher Kate Ballard believes that Lexi was murdered.

Kate teams up with head of security, Shane Moolman, to uncover the truth. Kate discovers a dark side to Lexi while tempers boil over at her memorial service.

Shane and Kate start targeting suspects with a motive, but Kate has her own reasons to believe in the innocence of a specific person. Reasons that must be kept secret.

Kate finds incriminating evidence in Lexi's possessions leading to an arrest. The killer may have been closer to Lexi than she thought. An encounter brings Kate a new revelation.

Kate and Shane chase a new suspect after finding out about Lexi's secret lover. Meanwhile, Jason is torn between trying to save his reputation and protecting the girl he loves.

A suspicious Philippa discovers graphic images on Jason's computer, as things take a dark turn at the legendary Clayton barn party. Meanwhile, Kate finda an ally on the police force.

After a shocking discovery, Kate gathers evidence on someone very close to her. Meanwhile, Jenna wakes up after the barn party and is forced to accept a terrifying truth.

An incriminating photo proves that the killer is within reach. Now Kate and Shane must gather the right evidence and confrot their own complicity in Lexi's murder.