***MURDERER+SPOILER***

Murderer: Clues: Motives:
 * Letitia Blacklock, who is actually Charlotte Blacklock.
 * Amy Murgatroyd said, “But Hinch, she wasn’t there…” later it is figured out that Miss Murgatroyd was referring to Letty (171).
 * Many instances where Dora and Bunch Harmon call Miss Blacklock “Lotty” (which is short for Charlotte) instead of “Letty” (short for Letitia).
 * Miss Blacklock wears a choker of pearls to cover up a scar from an operation, which proves that Miss Blacklock is not Letitia but she is actually Charlotte.
 * Although Miss Blacklock admitted that she did not want to kill Dora Bunner or anyone for that matter; she did not want her identity to be revealed.
 * While Miss Marple was explaining how the set up occurred, Inspector Craddock realized that Dora Bunner gave clues to what took place.
 * She had a tendency to reveal to much information without even realizing what she revealed.
 * For example, Dora mentioned that there was a burn on the table, but no one had even lit a cigarette.
 * The real Letitia Blacklock was going to receive money in the course of a few months, so Charlotte decided to impersonate her sister.
 * She justified her actions since she felt that life owed her because of her throat condition.
 * Rudi Scherz had no reason to blackmail Miss Blacklock, he was roped into Charlotte’s own plan.