How to Kill 400 Duponts was released in Italy in 1967. Producer
Dino De Laurentiis had been producing a film based on the
Diabolik fumetti neri series and sued the producers of
How to Kill 400 Duponts over their original title
Dorellik, which led to the film being re-titled
Arriva Dorellik ( Here Comes Dorellik) just before the film's release.
Terry-Thomas, who played a starring role in
Arriva Dorellik, also ended up guest-starring in De Laurentiis'
Danger: Diabolik. ==See also==