“Helloween” (** out of four) was a middling horror psychodrama set in 2016 in which a maniac (Ronan Summers) is on the loose and it’s up to a determined doctor (Jeanine Nerissa Sothcott) and a television personality (Michael Pare) to track him down and his followers and end their reign of terror. Derivative but not entirely disposable as it’s directed with some style by Phil Claydon and Pare is rock-solid as usual in the lead. Not a film you’ll likely remember next Halloween but far from the worst of its kind.