It's the day of reckoning for CID when they finally get suspected paedophile Clive Inverdale into court, but the situation goes from bad to worse when the court is stormed by a masked man with a gun, and Inverdale is shot dead. To make matters worse, Meadows' prime suspect, Ron Gregory, has an alibi in the form of none other than Hunter. With Sinclair also out of the picture, the investigation looks to be heading nowhere. Meanwhile, Osbourne and Hollis investigate several cases of stolen masonry, including one where the owner was brutally attacked during the robbery. A search of a derelict building for the stolen goods yields much more than expected when Joanna Sharpe is found alive.