Law & Order: UK

DS Ronnie Brooks (Bradley Walsh) agrees to help his old friend and partner DS Jimmy Valentine (Robert Glenister) in an undercover drug sting. But a gun is pulled and someone ends up dead. What appears to be a tragic mistake is investigated by internal affairs and DS Matt Devlin (Jamie Bamber) who fears Jimmy is not all he seems. As they push for the truth the spotlight turns on Ronnie and, in particular, his dark past as a functioning alcoholic when a ten year old drug case was left with no witnesses and a large quantity of missing heroin. The evidence is stacking up against the police and James Steel (Ben Daniels) and Alesha Phillips (Freema Agyeman) of the CPS battle Valentine’s barrister, Evelyn Wyndham (Anna Chacellor) to bring enough evidence to court. The jigsaw piece that will win it for them is Ronnie. But he refuses to testify. Is there something suspect in Ronnie’s past that will end his career now? Can the CPS find any other way of proving their case or in court will it be Valentine’s day?