It's the Swinging Sixties, and in Bromley, Kent, a newly married woman is slaughtered after inviting an unexpected guest in for a cup of coffee. But with no murder weapon and no fingerprints, police struggle to find the culprit...until they see a familiar name on a Christmas card written to the victim... We join Margaret Pereira, the first woman on the Scientific staff at the Metropolitan Science lab, as she pieces together the evidence to solve the mystery of the Bromley Bride murder.

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