Among others, Eileen Atkins and Annette Crosbie were considered for the part of Miss Marple's friend Dolly Bantry. The part was eventually given to Joanna Lumley, who calls herself a "die-hard Christie fan".
The producers of this series of Miss Marple TV dramas have set her home village of St Mary Mead in Oxfordshire. From clues given in the Agatha Christie books, if a real county was guessed at, Hampshire would be the likely location for St Mary Mead.
Ian Richardson's son Miles Richardson plays Conway Jefferson's son Frank in the opening scene.
Florence Hoath's second role in an Agatha Christie adaptation, after Innocent Lies (1995) - a film which deviated so far from Agatha Christie's work that her family asked for her name to not being included in the credits.
Joanna Lumley (Dolly Bantry) and Simon Callow (Colonel Melchett) both appeared in the same episode of Inspector Lewis.