Overview: The barrister examines the cases of Arash Ghorbani-Zarin, who was stabbed to death by his girlfriend's brothers. Thames Valley Police led the investigation into Arash's murder and soon uncovered that his death was the result of a shocking `honour killing'. There is also a look at the case of Violet-Grace Youens, who died after being hit by a car driven at 80mph in a 30mph area, by a driver who had no licence or insurance and who ran from the scene.