Jean Barillon

In Cartes sur table, the French Télévisions film adaptation of Agatha Christie's Cards on the Table, for the Les Petits Meurtres d'Agatha Christie TV series, Jean Barillon was the twin brother of Dr Emile Barillon, the parallel of Geoffrey Roberts from the original story.

Emile had originally been engaged to a girl named Jeannine Poussin. After the war, when Jean returned, Jeannine had broken off her engagement and got engaged to marry Jean instead. Jean however fell ill and despite treatment by Emile, got weaker and weaker until he died just one month before he and Jeannine were going to be married. Jeannine became Emile's secretary afterwards.

Commissaire Laurence later concluded that Emile had killed Jean out of jealousy. While pretending to treat him, he had instead been injecting Jean with small quantities of poison over a period of time. After Jean's death, Emile had quickly signed the burial permit and thus forestalled any closer examination of the body.

Jean Barillon does not appear on screen although he can be seen in a photo. Emile apparently kept a photo of Jean and Jeannine in a notecase and then left it by accident at commissaire Laurence's office. Laurence returned it to Emile through Jeannie, who saw the photo and took it out to frame on her desk. There is no parallel of Jean Barillon in the original novel.