Admiral Nelson becomes involved in a project to develop an amphibian adaption for man. He encounters conflict with the two chief scientists, rather than being cautious, b ...

A deep sea fisherman and his son arm and plant a World War II mine in an attempt to destroy a kelp harvester. ...

Avalon Air hires Mike for the easy job of watching over a group of competent sports divers he knows well. Joining them is one stranger, George Peterson, who goes missing ...

The police ask Mike for his thoughts on a man whose wife didn't resurface after photographing a shipwreck. The husband says she simply went deeper than she could handle. ...

An overly energetic man appears on Nelson's boat and claims to have built a machine which can find shipwrecks by calculating where the shifting of the earth's plates have ...

Mike Nelson is hired to locate two geologists who were conducting a survey just off the coast. When a body washes up on shore, it turns out to be one of the missing men. ...