The Fire Within (French: Le feu follet) is a 1963 French drama film directed by Louis Malle. It is based on the novel Will O' the Wisp by Pierre Drieu La Rochelle which itself was inspired by the life of Jacques Rigaut. The film stars Maurice Ronet, Jeanne Moreau-who had previously worked with Ronet and Malle in Elevator to the Gallows-as well as Alexandra Stewart, Bernard Noel, Lena Skerla, Hubert Deschamps and Yvonne Clech. The score features the music of Erik Satie.
The film was selected as the French entry for the Best Foreign Language Film at the 36th Academy Awards, but was not accepted as a nominee. In his 2006 Movie Guide, Leonard Maltin gives the film 3.5 stars (out of four) and calls it "probably Malle's best early film." Roger Ebert wrote that the film was a "triumph of style."