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.
Unfortunately the movie The Calculus Affair is not yet available on HBO Max.
| Production | Raymond Leblanc | Producer |
| Writing | Charles Shows | Screenplay |
| Sound | Ralph Darbo | Original Music Composer |
| Writing | Hergé | Comic Book |
| Directing | Ray Goossens | Director |
