The latest from Alex Ross Perry traces the psychology of an unforgettable woman under the influence. Becky Something (Elisabeth Moss, in a powerhouse performance), the influential lead singer of a popular ’90s alt-rock outfit, struggles with her demons as friends, family, and bandmates alike behold her unraveling through a prism of horror, empathy, and resentment. Perry tracks Becky’s self-destruction—and potential creative redemption—through snaking long takes (arguably some of DP Sean Price Williams’s finest work) in claustrophobic backstage hallways, garishly lit dressing rooms, and recording studios, and the film’s ensemble cast (including Cara Delevingne, Ashley Benson, Amber Heard, Virginia Madsen, Dan Stevens and Eric Stoltz) is impeccable in support of Moss’s rattling trip to the brink.