Washington [US], March 30 (ANI): A prequel to the hit horror film 'It' is in the works at HBO Max. As per Variety, the series, currently called 'Welcome to Derry', will begin in the 1960s in the time leading up to the events of 'It: Part One', the 2017 film based on the Stephen King horror novel. The story is also said to include the original story of Pennywise the Clown.