After an American sub ventures into Russian waters responding to a ship in distress-and winds up on the ocean floor itself-Commander Joe Glass (Gerard Butler) draws the dicey duty of leading the investigative voyage. Dealing with literal treacherous waters as well as diplomatic tides, he discovers that the naval disasters may be part and parcel of an audacious power grab at the Kremlin. Throwback thriller also stars Gary Oldman, Common, Linda Cardellini, Toby Stephens, Michael Nyqvist. 122 min. Widescreen; Soundtrack English.

PET SEMATARY - ULTRA HD - Spirits moan among the tombstones as Stephen King adapts his own best-seller about a mysterious Indian burial ground with resurrective powers. After the graveyard brings the Creeds' cat back from the dead, the family patriarch hopes it will do the same for his recently deceased son. But when the boy returns as a bloodthirsty murderer, it's up to dad to stop his reign of terror. Dale Midkiff, Denise Crosby, Brad Greenquist, and Fred Gwynne star. 103 min. Widescreen; Soundtracks English DTS HD 5.1 Master Audio, DVS, French, Portuguese, Spanish; Subtitles English (SDH), French, Spanish, Portuguese; audio commentary; featurettes. Two-disc set.