‘When a vital naval treaty vanishes from an admiral’s private safe during a crowded villa party, a brilliant detective is called in to crack the case. Facing a house full of high-society suspects, he uses intense psychological pressure and sharp intuition to unravel the mystery and unmask the thief’

« The film is undoubtedly superior to the previous two attempts at the giallo genre Corte d’Assise and The Man With the Claw. The entire investigation, for example, up to the discovery of the thief was skilfully executed by Bonnard. (…) The acting is theatrical but effective. » [F. Sacchi / Corriere della Sera / 03/01/1934]

Directed by Mario Bonnard, The Missing Treaty is based on the classic narrative of the “espionage-themed giallo”, a genre very much in vogue at the time, in which the tension revolves around the secrets concealed by each of the characters present in the house.