The Sun Hill squad learn Irene Radford is plotting one final raid before retiring from a life of crime for good, so Phil is tasked to monitor a prison meeting between Irene and her son David, where the top brass are hoping he'll glean valuable information about the job. Unfortunately, the philandering DS is easily distracted by an old flame working at the prison. This means that while the suspected raid goes belly up, while Irene attempts to bust David from a prison van. (thetvdb.com)