MyAnna Buring

Seasoned deep-sea divers battle the raging elements to rescue their crewmate trapped hundreds of feet below the ocean's surface.

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.

When her ground-breaking pharmaceutical discovery is stolen and partner murdered, researcher Amy must face her fear of heights to escape nefarious attackers, with the only path to salvation being a treacherous aerial runway. To outsmart the mysterious hostiles, she has to summon every ounce of courage to protect the world-changing scientific discovery — and herself — before it's too late.