A group of friends' plans unravel when a string of misfortunes spirals into bloodshed. Trust crumbles as the survivors are forced to confront harrowing the truth that sometimes, the deadliest threats come from within.

After a near-death experience, Vanessa Shepherd faces nightmares in Abaddon. As mysterious deaths occur around her, she discovers her connection to the Abaddon Hotel, Carmichael Manor, and decades of unexplained murders.