Naschy tried to interest Spanish director Amando de Ossorio in the project, who also tried to dissuade him. Finally, Eguiluz reconsidered and helped Naschy to find an interested Spanish film producer.
Naschy tried to get Spanish filmmaker Amando de Ossorio on board with his project, but he was initially hesitant. Eventually, Eguiluz stepped in and helped Naschy find a Spanish movie producer who would back him.