“Don’t Let Go” (*** out of four) was a nerve-wracking thriller in which a cop’s (David Oyelowo) family is murdered but he soon begins getting phone calls from his deceased niece (Storm Reid)! Is he going crazy or is this real and can he help solve (and thus prevent) her murder? Breathless story plugs you right into the moment and keeps you on the edge-of-your-seat due to Oyelowo’s gripping performance even though the story has more than its share of holes. Mykelti Williamson is strong in a key supporting role and has probably his best role here since “Forrest Gump.”