Disguised as an old woman, the Brow is preying on wealthy millionaires by pretending to be their long-lost mother and then killing them for their fortunes. Tracy creates a ploy to have Go Go Gomez impersonate a millionaire. Gomez advertises that he is trying to locate his missing parent. Buying into the sting, the Brow and Oodles invite the two detectives to their lair. There, Go Go and Tracy wrap up The Old Mummy Case in a snap.