Having attained enormous creative and financial success with the “Rec” pictures with partner Paco Plaza, director Jaume Balaguero returns to individual duty with “Sleep Tight,” though his sense of disturbing behavior hasn’t been exhausted. A creepy suspense film with a handful of decent twists and a supreme grasp on unsavory behavior, Balaguero passes on shock jumps for a snowballing atmosphere of threat, generating superb chills for those who enjoy a slower drip of danger to their scary stuff. “Sleep Tight” lacks transparent thrills, but its dedication to psychological disease and escalating panic results in a tremendously satisfying feature, low-key but splendidly sinister. Read the rest at Blu-ray.com