Grace and his team are called to the site of a tragic road traffic collision involving three vehicles: an articulated lorry, a car and a blue pickup truck. An unexpected discovery at the scene, found on the victim, soon suggests there could be far more to this particular accident than meets the eye, sparking an unsettling chain of events which leads Grace and Branson on a tense, desperate game of cat and mouse through the city of Brighton to save an innocent life before time runs out.