"The Case Of The Woman Who Wasn't Needed". Sponsored by: Kolynos Toothpaste. The last episode of the story. Mrs. Frank's strange reason for leaving her family is explained by Mr. Keen. The program open and close, music cues not included on this recording. Bennett Kilpack, Ray Collins, Frank Hummert (producer), Anne Hummert (producer). 

+ 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 Kilpack, Frank Hummert, Anne Hummert (author), Larry Elliott (announcer). 

+ CBS net. "The Case Of The Girl Who Flirted". Sponsored by: Aerowax, Kolynos Toothpaste. A murderer in an Egyptian tomb leads to a kidnapped girl and a stolen painting. Larry Elliott (announcer), Bennett Kilpack, Frank Hummert (producer), Anne Hummert (producer). 

+ CBS net. "Mr. Trevor's Secret". Sponsored by: Anacin, Kolynos, Heet, Kriptin, Bisodol, Hills Cold Tabs, Aerowax. A valuable chemical engineer has disappeared from a defense plant, seriously harming the war effort. Frank Hummert (writer, producer), Anne Hummert (writer, producer), Bennett Kilpack, Larry Elliott (announcer).

+ CBS net. "The Case Of The Strange Display". Sponsored by: Kolynos Toothpaste, Aerowax. Murder takes place in a department store, but Mr. Keen's no dummy! Bennett Kilpack, Frank Hummert (producer), Anne Hummert (producer). 

+ CBS net. "The Case Of The Woman In Blue". Sponsored by: Anacin, Kolynos, Heet, Kriptin, Bisodol, Hills Cold Tabs,. Black Flag. A soldier recovers from heartbreak with the help of Mr. Keen and Suzy, his secretary. Not one murder on this broadcast! Frank Hummert (producer), Anne Hummert (writer, producer), Bennett Kilpack. 

+ CBS net. "The Nightmare Murder Case". Sponsored by: Anacin, Kolynos, Heet, Kriptin, Bisodol, Hills Cold Tabs. A woman spends her husband's savings on secret voice lessons for her daughter. Frank Hummert (producer), Anne Hummert (writer, producer), Bennett Kilpack, Larry Elliott (announcer). 

+ CBS net. "The Case Of The Glamorous Widow". Sponsored by: Anacin, Kolynos Toothpaste, Old English Wax. Which one of her four boyfriends did her in? Bennett Kilpack, Frank Hummert (producer), Anne Hummert (producer), Larry Elliott (announcer). 

+ CBS net. "The Case Of Murder and The Star Of Death". Sponsored by: Kolynos Toothpaste, Bisodol Mints, Anacin. A magnificent jewel is stolen; a killer strikes in the dark. Bennett Kilpack, Frank Hummert (writer, producer), Anne Hummert (writer, producer). 

+ CBS net. "The Yellow Talon Murder Case". Sponsored by: Anacin, Kolynos, Heet, Kriptin, Bisodol, Hills Cold Tabs. Murder stalks a large estate along the Hudson River, fifty miles north of the city (Croton?). The killer is apparently a bird of enormous size. Frank Hummert (producer), Anne Hummert (writer, producer), Bennett Kilpack.

+ CBS net. "The Case Of The Man Who Invented Death". Sponsored by: Anacin, Kolynos Toothpaste, Heet. A modern alchemist has been electrocuted to learn his secrets. Bennett Kilpack, Frank Hummert (originator, producer), Anne Hummert (originator, producer), Lawrence Klee (dialogue), Larry Elliott (announcer).

+ CBS net. "The Case Of The Ruthless Murderers". Sponsored by: Anacin, Kolynos, Heet, Kriptin, Bisodol, Hills Cold Tabs. A man just out of prison after five years had sworn to kill Mr. Keen. But Keen is saved by one of his secret inventions. Frank Hummert (producer), Anne Hummert (writer, producer), Bennett Kilpack.

+ CBS net. "The Engaged Girl Murder Case". Sponsored by: Anacin, Kolynos, Heet, Kriptin, Bisodol, Hills Cold Tabs. Mr. Keen solves a murder case while on horseback! Frank Hummert (producer), Anne Hummert (producer), Larry Elliott (announcer), Bennett Kilpack, Lawrence Klee (dialogue). 

+ CBS net origination, AFRS rebroadcast. "The Bride and Groom Murder Case". A bride of only a few days is pushed off a fourteen story roof. It later is discovered she was a millionaire. Bennett Kilpack, Frank Hummert (producer), Anne Hummert (producer). 

+ CBS net. "The Case Of Murder and The Jewel Thief". Sponsored by: Anacin, Kolynos, Heet, Kriptin, Bisodol, Hills Cold Tabs. "Kansas Karl," a notorious jewel thief, decides to go straight...but doesn't get very far. Frank Hummert (producer), Anne Hummert (writer, producer), Bennett Kilpack.

+ CBS net. "The Case Of The Melody Of Murder". Sponsored by: Anacin, Kripton, Heet. Who is the Antwerp Strangler? The key to the crime is in a pianist's hands! Frank Hummert (originator, producer), Anne Hummert (originator, producer), Lawrence Klee (dialogue), Bennett Kilpack, Larry Elliott (announcer). 

+ CBS net. "The Case Of The Murdered Detective". Sponsored by: Anacin, Kolynos, Heet, Kriptin, Bisodol, Hills Cold Tabs. A private eye is knifed in a phone booth and the trail leads to stolen charity funds. Frank Hummert (originator, producer), Anne Hummert (originator, producer), Bennett Kilpack, Larry Elliott (announcer).

+ CBS net. "The Country Club Murder Case". Sponsored by: Anacin, Kolynos, Heet, Kriptin, Bisodol, Hills Cold Tabs. A strangulation at a exclusive Westchester Club leads to forgery as well. Frank Hummert (originator, producer), Anne Hummert (originator, producer), Bennett Kilpack, Larry Elliott (announcer), Lawrence Klee (dialogue).

+ CBS net. "The King Cobra Murder Case". Sponsored by: Anacin, Kolynos, Bisodol. A snake is used to kill on an ocean liner. Frank Hummert (originator, producer), Anne Hummert (originator, producer), Richard Leonard (director), Lawrence Klee (dialogue), Bennett Kilpack, Larry Elliott (announcer). 

+ CBS net. "The Broken Window Murder Case". Sponsored by: Anacin, Kolynos, Heet, Kriptin, Bisodol, Hills Cold Tabs. A dead rabbit provides Mr. Keen with the final clue to a killer. Frank Hummert (producer), Anne Hummert (writer, producer), Bennett Kilpack.

+ CBS net. "The Skull and Crossbones Murder Case". Sponsored by: Anacin, Kolynos, Heet, Kriptin, Bisodol, Hills Cold Tabs. A murder victim receives the skull and crossbones from a poison bottle before being murdered. His wife then receives the same warning. Frank Hummert (originator, producer), Anne Hummert (originator, producer), Richard Leonard (director), Lawrence Klee (dialogue), Bennett Kilpack, Larry Elliott (announcer).

+ NBC net. "The Photograph Album Murder Case". Sponsored by: Anacin, RCA Victor, Chesterfield. An impoverished actress, taken into a wealthy society home, is found murdered outside the door. Frank Hummert (originator, producer), Anne Hummert (originator, producer), Jean Carroll (dialogue), Phillip Clarke, Bob Hope (Chesterfield commercial), Richard Leonard (director), Jack Costello (announcer). 

+ NBC net. "The Abandoned Well Murder Case". Sponsored by: Anacin, RCA Victor, Chesterfield. A wealthy old man has been shot and thrown down as well..whodunit? Frank Hummert (originator, producer), Anne Hummert (originator, producer), Phillip Clarke, Bing Crosby (Chesterfield), Ken Carpenter (Chesterfield announcer), Richard Leonard (director), Jean Carroll (dialogue), Jack Costello (announcer).

+ NBC net. "Murder At A Mile A Minute". Sponsored by: Dentyne, Chesterfield, Anacin. A man is shot while driving through the park. Bing Crosby (Chesterfield commercial), Bob Hope (Chesterfield commercial), Phillip Clarke, Frank Hummert (originator, producer), Anne Hummert (originator, producer).

+ NBC net. "The Silver Candlestick Murder Case". Sponsored by: Chesterfield, Anacin, Beeman's Pepsin Gum, Dentyne. A photographer's model is killed and his body stuffed in the coal bin. Phillip Clarke, Jack Costello (announcer), Jean Carroll (dialogue), Richard Leonard (director), Frank Hummert (originator, producer), Anne Hummert (originator, producer).

+ NBC net. "The Mother's Plea Murder Case". Sponsored by: Dentyne, Chesterfield, Anacin. Shirley Spears has been murdered...by the wife of the wealthy man she's trying to victimize. Agnes Gray seems to be the killer, but she swears that she's innocent. Agnes' son Jack confesses to the crime! Despite two other confessions, Mr. Keen names the killer in a surprise ending! Phillip Clarke, Frank Hummert (originator, producer, dialogue), Anne Hummert (creator, producer), Jack Costello (announcer), Richard Leonard (director). 

+ Program #2. CBS net. "The Shrieking Prisoner Murder Case". Sustaining. Insane Amy Carson is kept imprisoned in the strange house. George implicates ax-wielding Luther Prague. Frank Hummert (originator, producer), Anne Hummert (originator, producer), Stuart Metz (announcer), Lawrence Klee (dialogue), Phillip Clarke, Blair Walliser (director).

+ Program #4. CBS net. "The Shrieking Prisoner Murder Case". Sustaining. The conclusion of the story, the killer is revealed. George Bryan (announcer), Phillip Clarke, Blair Walliser (director), Lawrence Klee (dialogue), Frank Hummert (originator, producer), Anne Hummert (originator, producer).