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Published on Nov 8, 2011
Peter and Gwenda Dixon were enjoying a hilltop walk in Pembrokeshire in 1989 when they were accosted, tied up and executed at point-blank range with a shotgun. In May 2011 their killer was found guilty of their murders and the 1985 slaying of siblings Richard and Helen Thomas. Real Crime looks at the forensic work that finally brought the killer to justice. Includes the use of footage from his 1989 appearance on game show Bullseye.