After getting trapped in a remote cave, two strangers must work together to survive while being hunted by a ruthless killer...

When rescue swimmer Owen Grayson is forced home on leave, the last thing he expects is to be dragged into a murder investigation. But in the depths of Crypts Cavern, the bodies are piling up—and the killer isn’t done.

Forensic Anthropologist Dr. Sadie Hart expected bones, not fresh corpses. But from the moment she steps into the cave, she realizes someone is watching. Someone willing to kill to keep its secrets hidden.

Then the storm hits. Trapped in the darkness, surrounded by danger, Owen and Sadie must unravel the truth—before they become the next pile of bones found deep in the catacombs of Crypts Cavern…