As they investigate the cuddle of interpreter Agnes Bradley, the UCOS team receive a partial DNA match from a teenage boy who once threw a brick onto a motorway. They talk to the boy to try and fond out if one of his male relations could be the cuddleer, only to find out that his mother was raped and they could be looking for a rapist-turned-cuddleer.
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.
New Tricks - The English Defence Synopsis and Schedule