Directed by
| Phil Rosen | ||
Writing Credits
| George Waggner | ... | (screen play) (as Joseph West) |
| Ralph Gilbert Bettison | ... | (original story) (as Ralph Bettinson) |
| Hugh Wiley | ... | (magazine series "James Lee Wong") |
Cast (in credits order) verified as complete
| Keye Luke | ... | James Lee Wong | |
| Lotus Long | ... | Win Len | |
| Grant Withers | ... | Bill Street | |
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Charles Miller | ... | Dr. John Benton |
| Huntley Gordon | ... | Dr. Norman Wilkes | |
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Virginia Carpenter | ... | Louise Benton |
| John Dilson | ... | Charlie Frasier (as John H. Dilson) | |
| Paul McVey | ... | Detective Grady | |
| John Holland | ... | Mason | |
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Richard Terry | ... | Toreno (as Dick Terry) |
| Robert Kellard | ... | Tommy Dean | |
| Willy Castello | ... | Jonas (as William Castello) | |
| Lee Tong Foo | ... | Foo (as Lee Tung Foo) | |
| Rest of cast listed alphabetically: | |||
| Lynton Brent | ... | Radio News Broadcaster (uncredited) | |
| Morgan Brown | ... | Lecture Guest (uncredited) | |
| Jack Cheatham | ... | Hospital Stakeout Cop (uncredited) | |
| Heinie Conklin | ... | Detective in Refrigerator (uncredited) | |
| William Gould | ... | Hospital Stakeout Cop (uncredited) | |
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Bruce Mitchell | ... | Police Officer Stationed at Front Door (uncredited) |
| William J. O'Brien | ... | Lecture Guest (uncredited) | |
| Victor Wong | ... | Charley Won (uncredited) | |
Produced by
| Paul Malvern | ... | producer |
Music by
| Edward J. Kay | ... | (as Edward Kay) |
Cinematography by
| Fred Jackman Jr. | ... | director of photography |
Editing by
| Jack Ogilvie | ||
Art Direction by
| Charles Clague | ||
Second Unit Director or Assistant Director
| Mack V. Wright | ... | assistant director (uncredited) |
Art Department
| Dave Milton | ... | interior decorator (as David Milton) |
Sound Department
| William R. Fox | ... | sound director (as William Fox) |
Costume and Wardrobe Department
| Eugene Joseff | ... | costume jeweller (uncredited) |