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
Mr. Keen, Tracer of Lost Persons 1955 The Case of Murder and the Revengeful Ghost (Final)
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Mr. Keen, Tracer of Lost Persons 1954 The Shrieking Prisoner Murder Case
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Mr. Keen, Tracer of Lost Persons 1952 The Silver Candlestick Murder Case
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Mr. Keen, Tracer of Lost Persons 1952 The Rented Cottage Murder Case
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Mr. Keen, Tracer of Lost Persons 1952 The Mother's Plea Murder Case
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Mr. Keen, Tracer of Lost Persons 1952 The Gossip Column Murder Case
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Mr. Keen, Tracer of Lost Persons 1952 The Case of Murder and the Prize-Winning Bull
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Mr. Keen, Tracer of Lost Persons 1951 The Strange Murder of Carrie Ellis
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Mr. Keen, Tracer of Lost Persons 1951 The Poisoned Sandwich Murder Case
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Mr. Keen, Tracer of Lost Persons 1951 The Photograph Album Murder Case
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Mr. Keen, Tracer of Lost Persons 1951 The Case of Murder at a Mile a Minute
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Mr. Keen, Tracer of Lost Persons 1951 The Case of Murder and the Strange Woman
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Mr. Keen, Tracer of Lost Persons 1951 The Airport Murder Case
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Mr. Keen, Tracer of Lost Persons 1951 The Abandoned Well Murder Case
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Mr. Keen, Tracer of Lost Persons 1950 The Telephone Book Murder Case
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Mr. Keen, Tracer of Lost Persons 1950 The Skull and Crossbones Murder Case
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Mr. Keen, Tracer of Lost Persons 1950 The Quicksand Murder Case
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Mr. Keen, Tracer of Lost Persons 1950 The King Cobra Murder Case
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Mr. Keen, Tracer of Lost Persons 1950 The Innocent Flirtation Murder Case
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Mr. Keen, Tracer of Lost Persons 1950 The Eccentric Millionaire Murder Case
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Mr. Keen, Tracer of Lost Persons 1950 The Country Club Murder Case
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Mr. Keen, Tracer of Lost Persons 1950 The Case of the Two-Faced Murderer
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Mr. Keen, Tracer of Lost Persons 1950 The Case of the Woman Who Married a Murderer
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Mr. Keen, Tracer of Lost Persons 1950 The Case of the Rushville Murder
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Mr. Keen, Tracer of Lost Persons 1950 The Case of the Murdered Detective
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Mr. Keen, Tracer of Lost Persons 1950 The Case of the Melody of Murder
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Mr. Keen, Tracer of Lost Persons 1950 The Case of Murder and the Missing Car
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Mr. Keen, Tracer of Lost Persons 1950 The Case of Murder and the Jewel Thief
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Mr. Keen, Tracer of Lost Persons 1950 The Broken Window Murder Case
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Mr. Keen, Tracer of Lost Persons 1950 The Bride and Groom Murder Case
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Mr. Keen, Tracer of Lost Persons 1949 The Yellow Talon Murder Case
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Mr. Keen, Tracer of Lost Persons 1949 The Silver Dagger Murder Case
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Mr. Keen, Tracer of Lost Persons 1949 The Forgotten Cave Murder Case
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Mr. Keen, Tracer of Lost Persons 1949 The Engaged Girl Murder Case
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Mr. Keen, Tracer of Lost Persons 1949 The Case of the Ruthless Murderers
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Mr. Keen, Tracer of Lost Persons 1949 The Case of the Man Who Invented Death
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Mr. Keen, Tracer of Lost Persons 1949 The Case of Murder with a Thousand Witnesses
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Mr. Keen, Tracer of Lost Persons 1949 The Case of Murder and the Star of Death
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Mr. Keen, Tracer of Lost Persons 1949 The Case of Murder and the Bloodstained Necklace
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Mr. Keen, Tracer of Lost Persons 1946-The Case of the Glamorous Widow
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Mr. Keen, Tracer of Lost Persons 1945-The Strange Case of Charley Lorimer
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Mr. Keen, Tracer of Lost Persons 1945-The Case of the Absent Minded Professor
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Mr. Keen, Tracer of Lost Persons 1944-The Nightmare Murder Case
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Mr. Keen, Tracer of Lost Persons 1944-The Case of the Woman in Blue
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Mr. Keen, Tracer of Lost Persons 1944-The Case of the Strange Display
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Mr. Keen, Tracer of Lost Persons 1944-The Case of the Moonless Night
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Mr. Keen, Tracer of Lost Persons 1944-The Case of the Missing Witness
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Mr. Keen, Tracer of Lost Persons 1944-The Case of the Leaping Dog
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Mr. Keen, Tracer of Lost Persons 1944-The Case of the Girl Who Sang Too Well
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Mr. Keen, Tracer of Lost Persons 1944-The Case of the Girl Who Flirted
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Mr. Keen, Tracer of Lost Persons 1944-The Case of the Frightened Child
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Mr. Keen, Tracer of Lost Persons 1944-The Case of the Boy Who Used Big Words
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Mr. Keen, Tracer of Lost Persons 1944-The Case of Murder in the Air
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Mr. Keen, Tracer of Lost Persons 1944-The Case of Mr. Trevor's Secret
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Mr. Keen, Tracer of Lost Persons 1955 The Case of Murder and the Revengeful Ghost (Final)
Mr. Keen, Tracer of Lost Persons was one of radio's longest running shows, airing October 12, 1937, to April 19, 1955, continuing well into the television era. It was produced by Frank and Anne Hummert, who based it upon Robert W. Chambers' 1906 novel The Tracer of Lost Persons. The sponsors included Whitehall Pharmacal (as in Anacin, Kolynos Toothpaste, BiSoDol antacid mints, Hill's cold tablets and Heet liniment), Dentyne, Aerowax, RCA Victor and Chesterfield cigarettes. It aired on the NBC Blue network until 1947, when it switched to CBS.
Characters and story
Bennett Kilpack began as Mr. Keen in 1937 with Arthur Hughes and then Phil Clarke stepping into the role later in the series. The kindly Keen and his faithful assistant, Mike Clancy (Jim Kelly), entertained listeners for 18 years. With 1690 nationwide broadcasts, Mr. Keen was the most resilient private detective in a namesake role. The nearest competitors were Nick Carter, Master Detective (726 broadcasts), The Adventures of Sherlock Holmes (657) and The Adventures of the Falcon (473). Only 59 of the 1690 Mr. Keen programs are known to survive.
Richard Leonard directed scripts by Barbara Bates, Stedman Coles, Frank Hummert, Lawrence Klee and Bob Shaw. James Fleming and Larry Elliott were the announcers. Al Rickey's band provided the background music, including the program's theme, "Someday I'll Find You."
Satires
The cliches, stereotypes and simplistic dialogue provided much fodder for Bob and Ray's parody, Mr. Trace, Keener Than Most Persons, broadcast in numerous variations. It was also combined with rival detective show Martin Kane, Private Eye and satirized by Harvey Kurtzman and Jack Davis in Mad magazine's fifth issue (June–July 1953), as Kane Keen! Private Eye.
The character of Mr. Keen was referenced by Alfred Hitchcock in one of his television shows, according to The Alfred Hitchcock Presents Companion by Patrik Wikstrom and Martin Grams, Jr. Mr. Keen is also mentioned in the stage version of Bye Bye Birdie by the character Mr. Harry MacAfee, who was played by Paul Lynde.
In the "Honeymooners" sketch, "Razor Blades", appearing on the October 12, 1951 episode of Cavalcade of Stars, Ralph Kramden cannot find his razor blades. When he questions Alice Kramden about it, she responds, "What am I? Mrs. Keen, Tracer of Lost Razor Blades?".
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