David Tennant and Elisabeth Moss have great chemistry as charismatic hippy psychiatrist RD Laing and his PhD student girlfriend, Angie Wood, in Robert Mullan’s biopic. Laing ran Kingsley Hall, which swapped padded cells for LSD and group therapy to treat its mentally ill patients to inconsistent effect. There’s plenty of jazzy paisley shirts, flamboyant velvet suits and on-the-nose music cues to denote its psychedelic 1960s setting, but these elements do little to soften Laing’s eye-raisingly invasive and possibly inappropriate approach to his patients.