A pair of new 4K restorations resurrect two neglected films which deserve to be better known – Matthew Robbins’ Dragonslayer (1981), one of the finest fantasy films ever made which has never fared well on home video, but looks wonderful in this new edition; and Richard Loncraine’s atmospheric Full Circle (The Haunting of Julia, 1977), adapted from Peter Straub’s first horror novel, featuring Mia Farrow as a mother traumatized by the death of her child, who becomes immersed in a decades-old mystery when she moves into a haunted house.