John Simenon has joined Chorion, the London publishing rights firm which controls the rights to his late father's Inspector Maigret novels as well as the Hercule Poirot books of Agatha Christie. Chorion today named Simenon as a consultant responsible for filmed production and promotion. He worked for several film producers before setting up full-time to manage the literary rights of his father. Copyright was acquired by Chorion in 2001.