Lady Mary is a fictional character portrayed by Jane Asher in the TV series Agatha Christie's Poirot.
In the first episode they appeared in, titled Three Act Tragedy (season 12), they were 65 years old.
They appear in 1 episodes out of a total of 70 aired
Episodes1
Three Act Tragedy
episode S12.E1 june 2011When a vicar chokes to death on a cocktail while attending a party held by actor Sir Charles Cartwright, Poirot initially dismisses the idea of murder but reconsiders when another guest dies in the same manner.