Right on schedule, it’s 27 years later and we’re back in Derry. It was inevitable that Stephen King’s It, immortalised by Tommy Lee Wallace and Lawrence D. Cohen’s TV movie and Tim Curry’s childhood-scarring circus fiend, would get drawn into the Hollywood remake machine, even if the story’s theme of inter-generational recurrence does at least provide a meta-logic. The first half of Warner Bros’ two-parter, Mama director Andy Muschietti has been tasked with introducing a new generation to King’s Losers Club and the shape-shifting clown that’s buttering them up with sweet, tasty fear. And fair enough: for younger horror fans,…