This was the tenth and final movie in which Sir Christopher Lee played a vampire Count. Contrary to what the title implied (imposed by the producers after the film had been shot just as 'Père et fils', literally "Father and son"), not once the character was identified nor portrayed as Dracula.
Released in France on 9/15/76. Released in 1979 in the US. The American distributor cut many scenes and replaced them with different gags.
Final film of Claude Génia.
A rare appearance in a theatrical feature film of Christopher Lee playing a vampire or Dracula but outside of the Hammer Film Studio's productions.