Episode 11 Details Casts Title Episode 11 Genres Kids Mystery Family Release Date 1974-03-17 Episode Runtime 00 Hours 25 Minutes Season Number 1 Episode Number 11 Production Companies NOS, Chanowski Productions Henk van Ulsen Dr. Kroch Henk Molenberg Valet Tabe Bas Oenk John Lanting Boenk Sylvia de Leur Sylvia
