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Every killer leaves some clue to their identity, scene of crime officers just have to find it. The series examines murder investigations through the eyes of the scientists who collect and analyse evidence the killers left behind.
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Episode 1
45 mins
SASHA MARSDEN Just streets away from the neon lights and fairground rides of Blackpool, police rush to the scene of a fire in an alleyway and make a discovery. The burning body of a teenage girl. She's identified through DNA as missing 16 year-old Sasha MARSDEN.





