Operación Úrsula. El misterio del submarino C-3 (2006)
A missing submarine in Spanish Civil War leads to the first German Navy operation before WW2. Republican submarine C-3 was the victim of international secrecy and intrigues, after a torpedo from U-34 sunk it on December 12th 1936.
Director: José Antonio Hergueta
| Directing | José Antonio Hergueta | Director |
| Writing | José Antonio Hergueta | Writer |
| Writing | Domingo Lerín | Writer |