Cast & crew
Hidden Enemy (1940)
Directed by Howard Bretherton Written by Charles Williams, Marion Orth
Cast
| Kay Linaker | Sonia |
| Wilhelm von Brincken | Werner Kampmann |
| George Cleveland | Lippy MacGregor |
| Fern Emmett | Aunt Beru |
| Edward Keane | Editor |
| Willy Castello | Eric Matthews |
| John Sheehan | Marden |
| Herbert Corthell | Pete Hogwallop |
| Vince Rush | Gruen |
| Warren Hull | Lippy MacGregor |
Crew
| Karl Zint | Sound Engineer |
| T.R. Williams | Producer |
| Harry Neumann | Director of Photography |
| Fred Scheld | Associate Producer |
| W.B. Eason | Assistant Director |
| Edward J. Kay | Music Director |
| Howard Bretherton | Director |
| Russell F. Schoengarth | Editor |
| Charles Williams | Writer |
| Robert Golden | Editor |
| Marion Orth | Writer |