While in prison, inmates Titus Oates and Colly Kibber plan a robbery.

Regan and Carter go after Billy Medhurst, implicated in a robbery that resulted in a policeman being shot and crippled. But is the past clouding Regan's judgement?

Regan gets involved in a secret government deal, thanks to Shebbeq, a Turkish cop.

Regan is assigned to ensure the safe shipment of a gold bullion consignment.

How will new recruit Bob Hargreaves cope with an investigation into a violent burglary?

Regan and Carter go undercover to assess corruption charges made against CID officers.

Regan tries to help out the son of a friend when the lad is implicated in an assault.

Regan gets involved in gangland warfare following the death of one of London’s leading villains.

Regan is fitted up by an ex-con to get his daughter's dodgy boyfriend out of the picture.

Carter's girlfriend asks him to find a missing villain, but Regan is suspicious.

Regan must find the source of illegal guns that are flooding the market.

Regan knows the identity of a robber, but has a difficult time proving his guilt.

An armed robber is sprung from jail and comes looking for Regan.