Leigh Took

When a deadly secret rots the mind of a grieving widower, the decision to work alone on a deserted island morphs into a terrifying race to save his sanity and his life.

After a tragic accident, six friends reunite for a caving expedition. Their adventure soon goes horribly wrong when a collapse traps them deep underground and they find themselves pursued by bloodthirsty creatures. As their friendships deteriorate, they find themselves in a desperate struggle to survive the creatures and each other.