PC Able is sent to a pub to deal with a man on valium. Meanwhile, Brownlow goes to Area for a board meeting to select candidates for a graduate entry scheme.
PC Turnham talks to a pavement artist before he is called to deal with a shoplifter at a music shop. Carver and Conway face an embarrassing situation when a thief confesses to a crime that has already been cleared up.
Sergeant Cryer and W.P.C. Martella are out together on night patrol. Among one of the people they encounter is Sharon, a woman roaming the streets with what she claims are the addresses of friends.
DI Burnside has an important visitor looking for an officer to join a special operation, while Sgt. Peters panics when a set of keys to the cells goes astray, and WPC Datta arrests a streetwalker with a baby.
Roach investigates a robbery that seems implausible: a bank manager was held hostage, but had the same thing happen eight years earlier. Unable to question the man as he's in a mental health centre, Martella goes undercover to watch him.
When a youth arrives at the station to request DI Burnside's help, he discovers that an old friend of his is planning to help his terminally ill wife commit suicide.
WPC Martella has just joined CID. One of her first assignments finds her being sent to bring a prostitute, Sheena Rossi, in for questioning - as a suspect is using Sheena as an alibi.
Turnham is being vetted by an officer from MI11 after applying for a transfer to Special Branch. Meanwhile, Bronwlow learns that Sun Hill station is to be refurbished and enlarged.
