In the bifurcated narrative of Stephen King’s 1986 novel It, adapted by Lawrence D. Cohen and Tommy Lee Miller into a two-part TV movie in 1990 and back in cinemas this week with Bill Skarsgård under the Pennywise powder, childhood trauma folds into adulthood fragility. In the second part of the original movie, generally acknowledged to be the weaker of the two, the grown-up Losers Club of Derry, Maine return to their hometown to face Tim Curry’s murderous Dancing Clown, back at it 27 years later. The young friends’ encounters with Pennywise and his shape-shifting forms are vividly dramatised in…