MyAnna Buring

Nearly a year after a botched job, a hitman takes a new assignment with the promise of a big payoff for three killings. What starts off as an easy task soon unravels, sending the killer into the heart of darkness.

After a personal tragedy, Sarah joins her friends on a caving expedition in the Appalachian Mountains. But when a rockfall traps them deep underground, their adventure turns into a nightmare. As they search for a way out, the group discovers they are not alone—lurking in the darkness are savage, cave-dwelling creatures. With rising tension and dwindling trust, the women must fight to survive against both the predators and each other.