“While We Sleep” (** out of four) was a muted horror melodrama about a dedicated radiologist (Darya Tregubova) who begins to investigate the abnormal CAT-scan of a young girl (Lyra Irene Gross) and begins to uncover dark and lurid secrets of her household that may threaten her and the girl’s family. Elegantly made and extremely well shot (it was directed by Andrsez Sakula who shot “Reservoir Dogs” and “Pulp Fiction”) but story never builds to anything satisfying and mostly just plods. Far from the worst of its ilk but after a while it may just put you to “sleep.”