John and the relief launch a big raid on local gangster Neculai Stenga, only to find thiinks don't go according to plan. Desk sergeant Mac is forced to face his shortcomings as a copper and we discover that Stenga has a close friend on the police force.......only who is it?

In his dealings with a local tramp, PC Clifton discovers his compassionate side. Following the failed raid on Stenga, John starts to self-combust.

A complaint is made against Christian, and a case involving local street gangs has fatal consequences for one of Holby South's policemen.

The station struggles to cope with their loss, and an attack on a youth starts a chain of events which remind John of his uncomfortable past.