Claim: A writer of Constantine's screenplay was a screen writer.
Evidence: With a screenplay by Kevin Brodbin and Frank Cappello , the film is based on DC Comics ' Hellblazer comic book , with plot elements taken from the `` Dangerous Habits '' story arc -LRB- issues # 4146 -RRB- and the `` Original Sins '' story arc.
Frank A. Cappello is a screenwriter , film producer and director.