Philippe Collin has been a pro­duc­er at France Inter for the past twen­ty years and holds a master’s degree in con­tem­po­rary his­to­ry. Since 2021, he has pro­duced a series of his­tor­i­cal pod­casts that have been down­loaded by more than forty mil­lion lis­ten­ers. The Bar­man of the Ritz is his first novel.