A brand new TV series inspired by one of Stephen King's most terrifying tales has made its debut - and fans of the author have been left singing its praises. IT: Welcome to Derry's first episode has been released to UK audiences today (October 27) on Sky and NOW TV, with the subsequent episodes released every Monday . The plot centres around the inhabitants of the fictional town of Derry which is plagued by odd goings on, multiple tragedies and unexplained disappearances as the years unfold.