Supt. Adam Okaro makes a shock decision to resign after he is forced to toe the line on the drugs issue by the Borough Commander. PC Des Taviner suspects a judge is corrupt when the absence of a key witness sees a court case collapse. PC Cathy Bradford is delighted after spending the night with TDC Brandon Kane, but Kane is indifferent. When an old school friend of PC Ruby Buxton disappears after being robbed, Buxton finds her friend's mother is defensive about her daughter's whereabouts. When the bank mistakenly credits his account, will DC Ken Drummond take the money and run, or notify them of their mistake?

PC Des Taviner is eager to investigate Judge Sinclair, who he suspects is corrupt. DCI Meadows, a friend of the judge, insists he drop it, but asks DC Mickey Webb to keep an eye on the case. Insp. Gold overhears Taviner and Meadows, and encourages Taviner to investigate in secret. TDC Brandon Kane urges PC Cathy Bradford to reveal that she is HIV positive, but Bradford is reluctant as she thinks it could ruin her chances of joining CID. A clairvoyant's glimpse of the future encourages Sgt. June Ackland to reconsider the nature of her relationship with PC Jim Carver.

When several houses are burgled, it appears that a criminal family working out of a grotto are getting people to give their address, so they can be burgled whilst shopping. Santa, Peter Garrett, is prime suspect, and has previous form for burglary, and his daughter Lisa is caught red handed when Turner uses his flat for a sting. Lisa says she did it to pay off some debt her father had with loan shark David Crossley, before he went to prison. Crossley is caught red-handed by Moss and Turner with a fake passport, and agrees to set up 'Robert', who is fleeing the country, to get time off his sentence. Moss tells Turner to pull the op when she identifies the target, drug dealer Robert Towler, who she was undercover with at S010 in 2005.

The evidence against Stevie begins to grow. Neil and Jack find themselves with some difficult questions to ask. Stuart even begins to wonder of Stevie has given up on career to follow her heart.

When Stevie finds out that the drug deal was a set up she goes on the run with Rob. The gang after them seem to know their every move though. Rutherford seems to know more about what is going on then he is saying.

Mel's brother and his girlfriend come to stay for the New Year. She thinks that they are going to see the new year in Trafalgar Square as she heads off to work. When the team are called out to an incident at a club she finds out they changed their plans.