Jack Armstrong #12

In "Madman's Island," Jack teams up with his Uncle Jim and friend Billy to confront a fugitive South American dictator holed up on a remote island, where he’s plotting a new war. Captured and imprisoned, Jack and Billy are thrown into the jungle, forced to outrun the dictator’s army in a deadly game of survival.

Former six-day racing star Alfred Letourner took cycling to breathtaking extremes, pedaling a specially equipped bicycle down a California highway at a record-breaking pace while being paced by a racing car. This incredible feat of speed and engineering showcases what peak athletic performance and unconventional preparation can achieve on two wheels.

When Jack Armstrong and Billy Fairfield arrive in the cursed Mexican seaport of Tomaso to meet Uncle Jim, they find the town gripped by mysterious terror—fishermen vanishing, the townspeople barricaded behind locked doors, and no sign of their uncle at the hotel. The pair quickly discovers that the supposed seismologists studying the area are imposters with far more sinister intentions, leading them to a shocking underwater discovery that reveals the true source of Tomaso's curse. Jack and Billy must act fast to uncover what's happened to the missing fishermen and rescue Uncle Jim before it's too late.