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Adam Gemili tries outrunning a Red Arrow. Rachel risks her life passing through a wall of fire. Ben uses Joey Essex's brain power to drive a car. Romesh, a former teacher, returns to the classroom armed with a new piece of technology.
Ben is attached to a wrecking ball and is set on a deadly collision course straight into Romesh. Rachel discovers how technology is about to make the dreams of a father of the bride come true. Romesh races against a drone and a white van man.