BBC One

Expert Witness - Series 1: 3. Forensic Imaging and MSN Chat

Marks left by the tread of a shoe help detectives catch a killer terrorising Rochdale, and a forensic linguist deciphers messages written in slang, revealing a murder plot. 

  • Duration29 mins
  • First shown25 Oct 2021
  • Available for 20 days
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Audio DescribedSign Language

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