Late at night, an elderly cat burglar, dressed all in black, breaks into a mansion, and cracks a wall safe; he tries to steal an object. The owner, Mr. Cahill, bursts into the room, and fires several shots at the burglar, who escapes out the window. On the roof, the elderly cat burglar is confronted by a young cat burglar, dressed in an identical all-black outfit. The young burglar asks, ""Don't you remember your best student?"" The elderly man says no, and asks, ""Who are you?"" The young man in black answers, ""Cat-- T. Hewitt Edward Cat."" (intro music)

At the Casa del Gato, Pepe is telling Cat about the world-famous emerald called ""the Portuguese"" which is in the possession of that racketeer Cahill. It was no doubt the Portuguese that the Sandman tried to steal last night. Cat says the Sandman was more than just his teacher, he was a Master. McAllister shows up and talks to Cat. Even though McAllister knows Cahill has stolen the emerald, he can't just search his place without a