Grégoire

In Drame en trois actes, the French adaptation of Agatha Christie's Three Act Tragedy for the TV series Les Petits Meurtres d'Agatha Christie, Grégoire is a student at Cours Semenoff, an acting school run by Macha Semenoff and a classmate of Alice Avril. He does not have a parallel from the original novel. Grégoire is portrayed by Tristan Robin.

After Grégoire and Alice meet, they hit it off and develop a romantic relationship. He also provides some valuable leads in the investigation of the death of Léon Verneuil. Grégoire told Alice that he had known Léon as a youth because they went to the same boarding school. Even then Léon had worked for a rag newspaper where he had already specialised in digging up dirt about people and publishing it. This suggested to commissaire Laurence a possible motive for killing Léon. Later, after Alice had been arrested by Tricard for the murder of Léon, Grégoire comes to her aid. He suggests that they practice some breathing exercises they learnt during the acting class to relax themselves and help remember some little detail they might have missed which might prove important. This apparently succeeded because Grégoire and Alice remembered that at the party thrown by Richard Nobel, they had seen Richard joking in a friendly manner with one of the servants who was dressed as a footman. This was unusual because Richard was normally quite nasty to his servants.