A murderous gang of counterfeiters has kidnapped the government’s best engraver and is forcing him to print virtually undetectable phony money. The Secret Service sends its toughest agent, Jack Holt, and a female partner after the gang.
Crime | Action | Drama
| Jack Holt | … | Jack Holt aka Nick Farrel | |
| Evelyn Brent | … | Kay Drew, R49 | |
| C. Montague Shaw | … | Chief John W. Malloy (as Montague Shaw) | |
| Tristram Coffin | … | Ed Valdin [Chs. 1-10] | |
| John Ward | … | ‘Lucky’ Arnold | |
| Ted Adams | … | Quist | |
| Joe McGuinn | … | ‘Crimp’ Evans |
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Holt of the Secret Service Part 1: Chaotic Greek
Holt of the Secret Service Part 2: Ramparts of Revenge
Holt of the Secret Service Part 3: Illicit Wealth
Holt of the Secret Service Part 4: Menaced by Fate
Holt of the Secret Service Part 5: Exits to Terror
Holt of the Secret Service Part 6: Deadly Doom
Holt of the Secret Service Part 7: Out of the Past
Holt of the Secret Service Part 8: Escape to Peril
Holt of the Secret Service Part 9: Sealed in Silence
Holt of the Secret Service Part 10: Named to Die
Holt of the Secret Service Part 11: Ominous Warnings
Holt of the Secret Service Part 12: The Stolen Signal
Holt of the Secret Service Part 13: Prison of Jeopardy
Holt of the Secret Service Part 14: Afire Afloat
Holt of the Secret Service Part 15: Yielded Hostage