of Fury" (March 30, 1949) "The Mystery of the Citadel of Doom" (April 1, 1949) "The Mystery of the Death Train" (April 4, 1949) "Terror Under the Big Top" (April 6, 1949) "The Man of a Thousand Faces" (April 8, 1949) "The Lost King" (April 11, 1949) "The Mystery of Skull Cave" (April 13, 1949) Untitled story (April 15, 1949) "The Secret of the Sahara" (April 18, 1949) "A Voice from the Grave" (April 20, 1949) "The Deadly Double" (April 22, 1949) "The Adventure of the Impractical Joker" (April 25, 1949) "An Experiment in Danger" (April 27, 1949) "The Mystery of the Phantom Fleet" (April 29, 1949) "The Triangle of Crime" (May 2, 1949) "The Mystery of the Vibrating Death" (May 4, 1949) "The Mystery of Butte Valley" (May 6, 1949) "The Eye of Balapur" (May 9, 1949) "The Horseman of Doom" (May 11, 1949) "The Mystery of the New Face" (May 13, 1949) "The Vengeful Ghost" (May 16, 1949) "The Mystery of the Flaming Forest" (May 18, 1949) "The Winged Horse" (May 20, 1949) "Death on the Diamond" (May 23, 1949) "The Riddle of the Tapestry" (May 25, 1949) "The Mystery of the Singing Wheels" (May 27, 1949) "The Speedway of Terror" (May 30, 1949) "Crime at a Bargain" (June 1, 1949) "The Vanishing Ships" (June 3, 1949) "The Case of the Double Double Cross" (June 6, 1949) "The Portrait of Satan" (June 8, 1949) "The Ghost of Shipwreck Island" (June 10, 1949) "Eleven for Death" (June 13, 1949) "Forecast for Crime" (June 15, 1949) "Murder on the Midway" (June 17, 1949) "The Borrowed Corpse" (June 20, 1949) "Killer at Large" (June 22, 1949) "The Mystery of the Frozen Monster" (June 24, 1949) "Mystery of the Walking Dead" (October 29, 1949) "One Minute to Death" (November 19, 1949) "Puzzle of the Poison Pomegranate" (November 26, 1949) "Death Rides the Roller Coaster" (December 3, 1949) "Diamond of Death" (December 17, 1949) The series left MBS with the 60th half-hour show, "The Mystery of the Frozen Monster", on June 24, 1949. It returned as a mystery program targeted toward adults on Saturday, October 29, 1949, at 8:30pm over the ABC network. ABC aired this adult-themed version for 13 weeks, concluding with "Dead Men Tell No Tales" on January 21, 1950. This broadcast marked the final radio appearance of Bud Collyer as Clark Kent/Superman. On June 5, 1950, ABC revived The Adventures