In our last episode, the Egyptian high priest had been released from jail and had secretly set sail for his native land carrying with him the black pearl of Osiris. Dick and Pat were there to see him off, and meanwhile the mogul, head of the society of art thieves who want the black pearl, manage to evade the police. Returning to their apartment, Dick sits down to read a while and Pat decides to go to bed - where he discovers that Junior is missing...