Goofs:
Continuity: The first time Patrick and Christine Redfern are heard arguing about Patrick's relationship with Arlena, Patrick says "I can't even speak to a pretty woman without you jumping to the conclusion that I'm having an affair with her". Later when Poirot flashes back to the scene, Patrick is heard saying "I can't even speak to a pretty woman with out you jumping to the conclusion that I'm... well, having an affair with her." The scenes are supposed to be identical but they are not. (more)

Trivia:
When Poirot examines the hotel register for signatures of previous guests, he discovers the names of several international celebrities during the 1930s, including Cole Porter, whose music is featured in the film; Ivor Novello; Maurice Chevalier; Fred Astaire and his sister Adele Astaire); Charles Chaplin; and possibly Marlene Dietrich. An entry listing a home address is listed as Berlin, although the signature is illegible aside from the capital M and D). The register is likely a private joke by the filmmakers since it appears on-screen for only a brief second or two. (more)

Filming Locations:
Mallorca, Balearic Islands, Spain (more)

Quotes:
Daphne Castle: Couldn't we make this a private investigation? You know how peculiar people can be about a spot of murder. (more)

Awards:
1 nomination (more)