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4 Episodes 2021 - 2021
Episode 1
29 mins
The collision team are called in to investigate a high-speed crash on the M4 which closes the motorway in both directions. With a driver under arrest and offering few clues, the answers could lie with a silent witness.
Episode 2
29 mins
A pedestrian is badly injured after being hit by a car, but police are suspicious of the teenage driver's version of events. After a motorcycle crash outside a busy garden centre, the full story is revealed - by the bike itself.
Episode 3
29 mins
Desperate 999 calls start flooding in to report a car travelling the wrong way along the motorway - but it still ends in tragedy. A motorbike and van collide in a busy city centre, but the story isn't as clear as it first seems.
Episode 4
29 mins
When a woman dies after being hit by a lorry on her way to play bingo, the team must reconstruct the scene of the crash to find out who's to blame. A cyclist fights for his life after a crash with an articulated lorry.