The Blaine brothers’ Nina Forever is an unusual, striking Brit-horror gem. paramedic Holly (abigail Hardingham) is drawn to rob (Cian Barry), partly because she’s intrigued by his tragic background — which includes a dead ex and a suicide bid. Whenever they have sex, the dead nina (Fiona o’shaughnessy) manifests, naked and bleeding. What’s really creepy (and interesting) is that Holly gradually becomes fixated on the ghost. acute about lingering grief and polite British misery, this is sexy, scary and blackly comic.