A chemist is working in utmost secrecy to develop formulas for the Ministry of War. However, he falls victim to skilled thieves. Detective Préval is certain they are associates of the scientist. Who will empty the poisoned cup of black coffee?
No streaming info available.
Verdict: Unknown
> Jean Kemm (Director)
> Paul Cotteret (Director of Photography)
> Agatha Christie (Novel)
> Pierre Maudru (Dialogue)
> H. Fowler Mear (Screenplay)
> Brock Williams (Screenplay)
