Overview: Kaye's world is shaken up when her sister Ruby returns with her boyfriend Michael. Eleswhere, as night falls, the Donahue family prepare nervously for the formidable race ahead.
Overview: The race is on and the road ahead is packed with dangers. The Donahues face up to a huge setback. Then, things go wrong on the Thames.
Overview: London's huge wall presents the racers with another massive obstacle, while the General and Faith hatch a sneaky plan and Jenny grows increasingly anxious.
Overview: Roman confesses to Meg the real reason they joined the deadly street race. Kaye and Michael clash over whether to fight or flee.
Overview: Lou and Hanmei crash into each other while vying for position on a country lane, forcing them to venture to a nearby farm to search for spare parts.
Overview: The ambulance, the hot hatch and the Volvo all chase an impenetrable Brookeheath prison truck containing some important cargo, heading towards the badlands of Manchester.
Overview: The remaining racers near the finish line as they approach the Highlands, and Kaye reveals a secret she has been keeping for years when she makes a shocking confession to Michael.
Overview: An act of sabotage causes all hell to break loose. From the chaos, the final contenders emerge. Season finale.