Osburnt: Dispatches From a Life Seared by the Arts

THE SHALLOWS may not be deep, but it is about something, and, to boot, smartly ironic. Blake Lively makes her way, as the generically named surfer “Nancy,” a med school student re-evaluating her life, to a secluded Mexican beach. She is solo, as her girlfriend travel companion is laid up from a bender the night…