Ivana MacKinnon

Distraught, confused, and half-wild with fear, Sarah Carter emerges alone from the Appalachian cave system where she encountered unspeakable terrors. Unable to plausibly explain to the authorities what happened - or why she's covered in her friends' blood - Sarah is forced back to the subterranean depths to help locate her five missing companions.

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.

When a young couple goes to a remote wooded lake for a romantic getaway, their quiet weekend is shattered by an aggressive group of local kids. Rowdiness quickly turns to rage as the teens terrorize the couple in unimaginable ways, and a weekend outing becomes a bloody battle for survival.

Three British teenage girls go on a rites-of-passage holiday—drinking, clubbing and hooking up, in what should be the best summer of their lives.