Agatha Christie's Poirot

Season 13, Episode 1

Episode Title: Elephants Can Remember

Air Date: 2013-06-09

Overview:

Poirot investigates a strange and gruesome murder of an elderly psychiatrist. Ariadne Oliver is pressed to try and uncover the truth behind two decade-old deaths. They soon find out that their separate investigations are linked and work together to try and solve the mystery.