The son of Marina Gregg and Isidore Wright was born twelve years before the main events in The Mirror Crack'd from Side to Side. He was Marina's only child and was born mentally retarded due to his mother contracting German Measles early in the pregnancy. As a result, he was placed in a home in America and Marina never spoke of him. His tragedy was what led to the murder of Heather Badcock, the woman who infected his mother with German measles.
Portrayals[]
The son is not named in the original novel but he does appear (or is mentioned) in several adaptations and often given a name.
The Mirror Crack'd from Side to Side (Agatha Christie's Marple episode)[]
In the 2010 ITV adaptation he is called Bobby. Marina Gregg is shown visiting him in an institution but he does not speak. The actor who portayed him is not credited.
Le miroir se brisa[]
In Le miroir se brisa (2017), episode 18 of series 2 of the French TV series Les Petits Meurtres d'Agatha Christie, the character is named François. He is kept locked in a room in the house of Blanche Dulac (the Marina Gregg parallel) and there he is discovered by Marlene. Francois is portrayed by Willy Delohen.