The knife-crime team are faced with the growing threat of mamba, a synthetic cannabis substitute that can be laced with rat poison and alloy-wheel cleaner and has been connected to multiple fatalities in Nottinghamshire. Elsewhere, a pair of opportunistic burglars help themselves to a few bottles from a pub.

Dog handler James 'Coups" Coupland chases down a boy racer in a Skoda on a dual carriageway. A young man is pulled over in a Vauxhall that is suspected of having cloned plates, and officers Lewis and Paul are dispatched to reign in a runaway shire horse on the A453.