New Delhi, June 15 (ANI): 'A Star is Born' director Bradley Cooper may replace Leonardo DiCaprio in Guillermo Del Toro's 'Nightmare Alley'. It is being reported Cooper is in talks for the male lead, however, it is not clear if Cooper's deal will close at this stage. 'Nightmare Alley' will be based on William Lindsay Gresham's novel. The film's story revolves around a con man that teams up with female psychiatrist for a mentalist routine but discovers that he was manipulated by her. Written by Del Toro with Kim Morgan, the film will be produced by J Miles Dale.