Game 1: Donald E. Gray - ""Teaches Course for Expectant Parents"" (from Flint, Michigan) Game 2: Rae V. Biester - ""Head of U.S. Mint (Philadelphia, PA)"" (from Drexel Hill, Philadelphia) Game 3: Kathryn Grayson (as Mystery Guest) Game 4: Peter R. Kaplan - ""Private Detective"" (for the Metropolitan Detective Agency; from Radisson, New Jersey; he is also a student at Princeton)