Combining business with pleasure, the Harts scuba dive off the coast of Largos, testing an innovative underwater camera for the Navy. Early afternoon, as the Harts stroll along the beach, the body of a Navy SEAL working on the project washes on shore. Then there's the rumour of treasure, stolen by a man known to have disappeared- the Harts think he might be alive. Plus there's other villains interested in the camera and treasure.
An entertaining mix of mystery, adventure, romance, beautiful locations , and a great villain and some dreamy underwater sequences. Pat Hingle and Sandahl Bergman of Conan fame star. There's a nice three-wheeled bike chase at the end.