简介：It returns six months after the shocking finale of Season 3, and the team must overcome their grief to tackle a dangerous crime wave.
This time, the gloves are well and truly off for Professor T in his lectures and a new musical pursuit, romance is very much alive for his mother Adelaide Tempest (De la Tour), and the lines between professional and personal become blurred for therapist Helena Goldberg (Stevenson).
Meanwhile, DI Maiya Goswami (Sunetra Sarker) takes charge of the police force with series favorite DS Dan Winters (White) fiercely at her side.
Anna Samson/Lloyd Griffith/Tai Hara/凯瑟琳·麦克克莱门茨/Celia Ireland/Aaron L. McGrath/安德里亚·德梅特里亚德斯/朗·斯迈克/阿道·欧汉隆/吉娜维夫·莱蒙/皮特·菲尔普斯/塔拉·莫里斯/杰里米·林赛·泰勒/Naomi Sequeira/哈里·格林伍德/艾尔利·多兹/雨果·约翰斯通-伯特/Jenni Baird/麦琪·登斯/安妮·芬斯特尔/
大卫·休默/Arjun Athalye/杰登·巴特尔斯/斯坦尼·布莱登/Elijah M. Cooper/沙基纳·贾弗里/Galilea La Salvia/山姆·麦卡锡/Dawn McGee/Francesca Noel/阿娜·奥缇兹/Eloise Payet/克里斯托弗·保罗·理查兹/凯拉·坦塔/威尔·菲茨/
