A blood-stained bust is uncovered during some reconstruction work in a cemetery, pointing UCOS to the cuddle of an alternative medicine practitioner bludgeoned to passing seven years ago. The evidence leads to the pioneering but controversial world of cryopreservation - the practice of keeping clinically dead patients frozen in time to extend their lives.
In a sensitive case, with the watchful eyes of their bosses upon them, Sasha is determined that her team won't put a foot wrong. But with suspects constantly running rings around them and the sobering possibility that two perpetrators are still at large, UCOS must go out on a limb to unlock their most difficult cold case yet.
Fiona is offered a job too good to be true in Aberdeen, leaving Danny bereft at the thought of losing her. Ted is devastated when he realises he's lost his lucky cigarette case, and Sasha has an interesting offer from the notoriously cut-throat assistant commissioner Cynthia Kline.
s12e01 - Last Man Standing (1)
s12e02 - Last Man Standing (2)
s12e03 - The Curate's Egg
s12e04 - The Wolf of Wallbrook
s12e05 - Prodigal Sons
s12e06 - The Fame Game
s12e07 - The Russian Cousin
s12e08 - Lottery Curse
s12e09 - Life Expectancy
s12e10 - The Crazy Gang
New Tricks follows the work of the Metropolitan Police Service's Unsolved Crime and Open Case Squad (UCOS). Led by Detective Superintendent Sandra Pullman, it is made up of retired police officers who have been recruited to reinvestigate unsolved crimes.
The series title is taken from the popular expression "You can't teach an old dog new tricks". The "old dogs" are successful in adapting their skills and experience to modern policing, with their knowledge of past cases proving especially useful.