THE DEADLY PHANTOM HORSESHOE STRIKES! AN OCEAN LINER BLAZES ...TO COVER CRIME! THE INFRA-RAY HURLS UNSEEN DEATH! THE POISON FOAM BUBBLES VENOMOUSLY!

When a friend of Charlie's is found kicked to death by his own race horse on board a Honolulu-bound liner, the detective discovers foul play and uncovers an international gambling ring.