Strange things are happening in the evening at the mansion: glass things break without any apparent reason. Professor Calculus, somewhat apathetic to the whole series of events, leaves the following day to attend a conference on nuclear physics in Geneva. Foreign powers get wind of his work and send their agents to investigate.
Georges Poujouly
as Tintin (voice)
Jean Clarieux
as Captain Haddock (voice)
Fernand Fabre
as Professor Tournesol (voice)
Jacques Marin
as Dupond / Dupont (voice)
Lita Recio
as Bianca Castafiore (voice)
