The Leonardo DiCaprio sci-fi thriller, Inception, that is to be directed by Chris 'The Dark Knight' Nolan, is in talks with three big names to join its cast. Irish actor Cillian Murphy, Juno star Ellen Page and recent Oscar winner Marion Cotillard are all in advanced negotiations to hop aboard the big budgeted Warner Bros. film. Murphy has already worked with Nolan on Batman Begins and The Dark Knight, while he just completed the film Peacock with Page. Cotillard will next be seen in the Michael Mann helmed, Johnny Depp/Christian Bale starring John Dillinger epic Public Enemies. Notthing is known about the plot of Inception, other that it is a "contemporary sci-fi actioner set within the architecture of the mind." Filming starts this summer.