A bullet smashes through the window of Lomax's barge, just missing him and his pet budgie. Believing someone wants him dead, he goes in search of the shooter, but what he discovers is more shocking, as the target is actually a police Grass, played by Cousin Tel in Hazell, the brilliant Desmond McNamara. Lomax tries to report his findings to the local Bobby, but he isn't interested, so Lomax uses Robinson, the fleet street journo who has been on his tail since he left prison. They join forces, but it's not enough to save the life of the Grass.