Jack Harris

Racketeer George Castle kills Las Vegas hotel owner Glenn Faulkner over a gambling debt and sets his sights on land inherited by Faulkner's daughter, Stephanie. When Castle turns up murdered as well, Stephanie finds herself the number one suspect.

A woman tells Matt that she killed her outlaw son rather than let him give himself up.

A jet plane suddenly goes out of control, plunging to the bottom of the sea. When ex-Navy frogman Mike Nelson dives to locate the wreck, he's amazed to find the pilot still alive, imprisoned in the watertight cockpit.

Mike Nelson cruises to a small Mexican fishing village where he finds strange phenomena. Every fish in the vicinity seems to have disappeared. Mike uses the latest scientific 'miracles' to pierce the mystery of the disappearing fish.

Bat tangles with would-be tycoons Lee Baxter and Willard Wynant who employ ex-Pony Express riders to bring them advance a news of shifting silver values and mine conditions to get a jump on other speculators.