TV Guide Quest Red Thursday

The case of 13-year-old Ashley Summers. Trouble brewed for the fun-loving teenager when she started keeping secrets. When she disappeared from home, investigators had to contemplate whether she was just another runaway

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

With her good looks and sunny demeanour, doctor's assistant and part-time model Christine Kent attracted her fair share of admirers. However, after one encounter ignited jealousy and obsession, Christine was blind-sided by the devastating consequences

In Prestatyn, a woman's anger over a neighbourhood dispute leads her to wreak revenge on a family with tragic consequences. And the disappearance of a woman in her mid-fifties leads to a revelation beyond her family's worst nightmares