Four teen girls diving in a ruined underwater city quickly find themselves in a watery hell as their fun outing turns into heart-stopping fear when they learn they are not alone in the submerged caves. As they swim deeper into the claustrophobic labyrinth of caves they enter the territory of the deadliest shark species in the ocean.

Danger and excitement are always lurking below the surface in this underwater adventure classic. Mike Nelson is a scuba diver in the days when it was still very new. He works alone and outwits villains, salvages anything from a bicycle to a nuclear missile from the sea, and rescues those trapped underwater.

Contact: Astronomer Dr. Ellie Arroway receives an encrypted message, apparently from a solar system many light-years away. Lost in space: The year is 2058. With the Earth's resources severely depleted human survival depends upon "The Jupiter Mission." This daring plan will launch an entire family-- the Robinsons-- into the farthest reaches of hyperspace to colonize "Alpha Prime," the only other habitable planet in the galaxy. But when a stowaway...