His novel 'Naked over the fence' was later made into a movie under the same title: Naakt over de schutting.
He was also chairman of the jury of the Film by the Sea film festival in Vlissingen from 2002 to 2014.
He also wrote portraits of movie stars. According to Mulder, he was obsessed with movie stars. "He was particularly interested in their love life. He measured that widely.".
He wrote a total of 24 books, mostly crime novels.
In 1969 Ferdinandusse became editor-in-chief of the opinion weekly Free Netherlands, where he continued to work until his retirement in 1996.