William McGraw

El alguacil Matt Dilon intenta mantener la ley y el orden en Dodge City, Kansas, y alejar a los maleantes de la ciudad.

A pretty magazine photographer employs Mike Nelson to help her film a sunken barge off the coast of Mexico. Despite Mike's warnings, she gets trapped on the bottom of the sea.

A Smithsonian Institute professor employs Mike Nelson to salvage a German submarine sunk off the coast of South America. But two "hard-hat" divers in conventional diving helmets and lead boots are after the same prize. Mike defies his competitors - and an entire government - to salvage the sub and fill a missing page in the history books.

Mike Nelson accepts a challenge to race underwater from California to Catalina against expert swimmer Blaze Green. Her reckless pursuit of publicity leads to danger when she swims into a subsurface storm, forcing Mike to attempt a daring rescue.

When Joe Ross drowns during a water ski show's underwater finale, Mike investigates. He discovers an unidentified scuba diver was spotted near the scene and learns of a jealous ex-husband's threats, leading to a fierce underwater confrontation.