At Peachstone National Park, Ranger Willoughby gets a call: the park is about to be invaded by tourists. He gets it open and ready for the tourists.
The year is 1849. Gold is discovered in California. After the gold come miners. After the miners comes infamous outlaw Pretty Boy McCoy, who holds up a Fells Bargo bank in a mining town.
The summer season goes to an end, and the tourists' autos, trailers, boats, etc. leave Peachstone National Park. But there may be something afoot.
Inspector Willoughby is a Fells Bargo agent who has captured some bandits and is shipping them (and a big bag of money), via steamboat, down the Mississippi to New Orleans.
Inspector Willoughby, seated on a camel trudging through the vast Sahara Desert, is on his way to return the fabulous Red-Eyed Ruby stolen from the forehead of an idol in the tomb of King Tut Tut Almond.
Inspector Willoughby captures infamous and elusive master spy X13 after a lengthy chase aboard the Cloak and Dagger Express.
Inspector Willoughby has traced evil international jewel thief and master of disguise Vampira Hyde to the Limehouse District in London.
Inspector Willoughby is assigned to foil the attempts of a criminal named Crash McDash to escape from Sing Song Prison.
Notorious criminal Yeggs Benedict, having just pulled a $50,000 bank robbery, hears a radio report in his hideout that Inspector Willoughby has been assigned the case.
One-Eyed Jack, great-great-grandson of that notorious pirate, Black Jack, hijacks a battleship, but he then has to face that internationally-famous detective, Inspector Willoughby in a battle of wits. Hopping into his outboard motorboat, he puts One-Eyed Jack under arrest, but One-Eyed Jack promptly sinks him and his boat with pistol fire.
Inspector Willoughby tries to retrieve The Maltese Chicken from the evil oriental villain Egg Foo Yung.
Inspector Willoughby, the famed criminologist and master of mystery, travels to India to aid a rajah whose favorite royal elephant has been abducted by an evil swami.