New Tricks BBC1, 9pm
Back in 1983, 16-year-old Amy Taskerland was murdered on the night of the school disco. More than 30 years later, the unearthing of a time capsule and the discovery of her voice on a mix tape inside prompts Miller and co to delve back into the case, starting by interviewing Amy’s best friend Harriet and her former teacher Mr Hines. The recording features a strange mix of music and poetry, including words from a speech written in secret for the Queen for broadcast in the event of a nuclear war. But how did Amy get a copy of it?