After arriving at the mysterious castle, the university professor begins to encounter a sequence of mysterious events, to which he reacts with his rational thinking and tries to explain them logically.

• Československá televize
• Václav Knop
• Jiří Schwarz
• Oldřich Vlach
• Jaroslava Adamová
• Ilona Svobodová
• Valerie Kaplanová
• Svatava Hubeňáková
• Jan Pohan