Entering Hades' is based on author John Leake's true crime novel about Jack Unterweger, a celebrated Austrian journalist and best-selling author who led a double life investigating murders by day and killing by night -- compliling a body count of 11 people across several continents.
Alexander Dinelaris, who won a best original screenplay Oscar as one of the four screenwriters on 'Birdman', is rewriting the screenplay of the film. A director for the film is yet to be finalised.