▶ DCI Banks_S05E04_A Little Bit of Heart (Part Two)

S05E04: A Little Bit of Heart - Part 2. Li is found dead in his home by his wife, clear plastic over his head. Banks deduces that Xun Li knew his killer as he had opened the door to someone. His son Bo is the prime suspect; Xun's first wife died giving birth to him, and he is a disappointment to his father. However fibres found on Xun's clothes point to Wendy Xiao, whose protection racket Xun was seeking to expose. Xun's brother killed him accidentally, after hearing a video from China of Xun describing the people he named for prison in China, giving up his brother and his wife to authorities to save his own life. The brother gave a taste of the torture which brought on a fatal asthma attack. While the team celebrates Helen Morton's promotion to DCI, Annie meets someone in a restaurant, calls Banks from an alley nearby, and she is stabbed after telling him where she is.