The Crash Detectives S05E05 - Silent Witness

A huge emergency response is underway on an industrial estate in Croespenmaen in Caerphilly. Two lorries have collided – and while one driver has managed to escape unhurt, the other driver is now seriously injured and trapped in his cab. As desperate efforts to free him get underway, critical care doctors arrive by helicopter, and Dean Burnett and Sergeant Rhys Dickinson are called in to search for answers.

With the amount of activity going on at this volatile scene, they're in no doubt that they could lose vital evidence and must begin a race against time to establish how the two trucks crashed. But as the evidence is unpicked, one driver's story starts to unravel.