Our guests discuss evidence that two Crown Agents’ Sisters, Julia Middleton and Cressida Dick, equipped City & Guilds operatives with TETRA (TErrestrial Trunked Radio) radios to track the murder of MI-6 spy Gareth Williams at his London flat.
To get up to speed quickly about what Field and David are investigating, watch these videos.
Pattern Crimes
Pattern Signs
Pattern Times
Information can also be obtained from their books and online reference material:
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