As Mr Keen and his assistant do office chores, his secretary is late, and has a mysterious story to tell. She brings in a neighbor who is sure that her…
A matter of murder has Mr Keen on the case, over a sapphire known as the star of death. A Sapphire is missing, the jeweler is murdered. What happened to…
A boy with an unusual manner, and one with quite a vocabulary, stops in Mr. Keen's office. Jimmy doesn't have a case of a missing person, but a person who…
A museum curator hires a flirtatious girl. Suddenly, in the middle of painting a copy of a portrait, she disappears. The clues for the mystery are layed out when the…
CBS net. "The Case Of The Missing Witness". Sponsored by: Anacin, Kolynos, Heet, Kriptin, Bisodol, Hills Cold Tabs. A famous fashion designer has killed her daughter's lover...or has she? Bennett…
Mr. Keen, Tracer Of Lost Persons. January 6, 1944. CBS net. "The Case Of The Moonless Night". Sponsored by: Anacin, Kolynos, Heet, Kriptin, Bisodol, Hills Cold Tabs. Mr. Keen's in…