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.
演员：索茜·贝肯 吴育刚 奥马尔·马卡迪 Shira Scott Astrof Rick Glassman Nanrisa Lee Matt Cordova 大卫·富特尼克 Sue Ann Pien Heather Adair Arthur Keng Melanie Herrera Jocelyn Marie Albert Rutecki