Chad Grothkopf appears in 24 issues in this volume.
Dead Men Tell No Tales; The Treasure Tower
The Magician Murder
Professor Cobalt's Quack Clinic
The Brentwood Rehabilitation Home
The Strong-Man Robberies
The Life Insurance Scam
A Summer Snow
The Hand of Morpheus
The Preston Gambling Racket
The Lumber Millionaire's Will
The Coal Mine Heiress
The Worthless Gold Mine
Clark Kent, Police Commissioner
Hypnosis by Radio
The Man With the Radioactive Touch
The Reformation of Nancy Thorgenson
The Sabotage Ring
The Pilot's Revenge
The Devil's Playground
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