Base on Hester Albach's novel. New of the film version began to pick up steam in November of 1976 when De Telegraph ran a full-page article on the film's casting. Nouchka van Brakel wanted an unknown for the lead, though. It was essential that the part not be played by a recognizable actress. A week before Christmas, 1976, De Telegraph announced the actress who Van Brakel had cast. Her name was Marina de Graaf.