The Missing Treaty

 The Missing Treaty (Italian: Il trattato scomparso) is a 1933 Italian mystery film directed by Mario Bonnard and starring Ernesto Sabbatini, Leda Gloria and Mino Doro. It was shot at the Cines Studios in Rome. The film's sets were designed by the art director Gastone Medin. A separate French version Le masque qui tombe was also produced.

Synopsis
A document containing information about a new secret weapon is stolen from the safe in an admiral's house. Inspector Brown of the police is called in to investigate.

Cast

 * Ernesto Sabbatini as 	L'ammiraglio Morstan
 * Leda Gloria as 	Anna - sua figlia
 * Mino Doro as 	Carlo - suo figlio
 * Giuditta Rissone as 	Miss Alice Baskerville
 * Nini Dinelli as 	Contessa Clara di Roussel
 * Memo Benassi as 	John Brown - detective
 * Fosco Giachetti as 	Giorgio Raytham - comandante
 * Lamberto Picasso as Il barone Fersen
 * Alexandre Mihalesco as 	Jackie - il domestico
 * Oreste Fares as 	Mister Baskerville
 * Giovanni Ferrari as 	Un autista