Stories:

1. Cleo and Clancy [1] (by Bob Kane)
2. Speed Saunders Ace Investigator and The Persian Jewel Mystery [24] (by Fred Guardineer)

1. Oscar The Gumshoe [5] (by Bob Kane)
2. Larry Steele Private Detective [21] The Model Murder Mystery, Part 1 (by Will Ely)
3. Cosmo, The Phantom of Disguise [24] The Ace Foundry Sabotage (illustrated by Sven Elvén)
4. Spy [24] Subterfuge at Sea (by Jerry Siegel and Joe Shuster)
5. Crime Never Pays [4] (by Don Vincent [aka Vincent Sullivan])
6. Stamp Collectors' Corner (text)
7. The Mysterious Doctor Fu Manchu! [Part 8] (by Sax Rohmer)
8. The Old Grey House (text story by Terry Keane)
9. The Crimson Avenger [5] Tony Sparta and The River Gang (by Jim Chambers)
10. Bruce Nelson in Back from The Dead, Part 1 [24] (by Tom Hickey)
11. Buck Marshall Range Detective [21] Trail of Paper (by H. Fleming)
12. Slam Bradley [24] In Two Billion A.D., Part 2 (by Jerry Siegel and Joe Shuster)
13. Detective Puzzles