Seacliff High Mystery Books in Order

Alyson and her friends volunteer at the Christmas carnival, where strange incidents may connect to a body found earlier. A dangerous Ferris wheel accident strengthens their suspicion that someone is protecting a conspiracy involving respected townspeople.

Two Seacliff High students vanish before Halloween, but the police assume they ran away. Strange events around the haunted hayride lead Alyson and her friends to investigate a possible connection between the disappearances and an old curse.

Alyson and her friends arrive at a Colorado ski resort for a post-Christmas holiday and discover a body in the snow. Other unusual incidents persuade them that their vacation needs an investigation alongside the planned recreation.

A ghost leads Alyson to a treasure map before Thanksgiving, sending her and her friends into caverns beneath Cutters Cove. They pursue a legendary relic while confronting their fears and the continuing dangers of Alyson's hidden past.

Placed in witness protection after seeing a murder, heiress Alyson Prescott starts over in coastal Oregon. Her new cliffside mansion holds a decades-old mystery, drawing her school friends into a trail of deception, embezzlement, and unexplained deaths.

While preparing Seacliff High's Haunted Hayride, Alyson discovers unexpected ghosts in the house chosen for the party. She investigates how they came to be there, seeking the circumstances of their deaths and the person responsible.

Alyson sees a woman pushed from a cliff, but police cannot find a body. Investigating with Mac and Trevor, she also feels watched and fears that the men threatening her former life have located her.