* AllStarCast: Creator/VincentPrice, Creator/DianaRigg, Creator/IanHendry, Creator/HarryAndrews, Coral Browne, Robert Coote, Jack Hawkins, Creator/MichaelHordern, Creator/ArthurLowe, Creator/RobertMorley, Dennis Price, Creator/EricSykes, Creator/DianaDors and Film/HammerHorror starlet Creator/MadelineSmith.
* CompletelyDifferentTitle:
** Latin America: ''The Merchant of Death''
** Brazil: ''The 7 Masks of Death''
** Denmark: ''The Blood Cabinet''
** Hungary: ''The Shakespeare Murders''
** Italy: ''Bloody Oscar''
** Norway: ''Bloody Acting''
** Portugal: ''To Kill or Not to Kill...''
** Spain: ''To Kill or Not to Kill, That is the Question''
** Turkey: ''Bloody Game''
* CreatorsFavoriteEpisode:
** This film was reportedly a favorite of Creator/VincentPrice's, as he had always wanted the chance to act in Shakespeare, but found himself typecast because of his work in horror films.
** Creator/DianaRigg regarded this as her best film.
* FakeBrit: The American Vincent Price as the British Edward Lionheart.
* RomanceOnTheSet: Creator/VincentPrice was introduced to his future wife Coral Browne by Creator/DianaRigg during the making of the film. Browne recalled in a television documentary ''Caviar to the General'' in 1990, that she had not wanted to make "one of those scary Vincent Price movies" but she was persuaded to take the part of Chloe Moon by her friends Robert Morley and Michael Hordern, acknowledging that the film thus had a very strong cast. Rigg introduced the couple, ignorant of the fact that Price was married.
* WorkingTitle: ''Much Ado About Murder''.
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