Episode 6: Every contact leaves a trace, or so Lochard’s principle of exchange would have us believe. Police examine the forensic evidence. The crime scene examiners work on three locations: Beth’s house, the Cameron house, and the Land Cruiser. Blood is found at the scene of the murder. Police forensic experts also find blood at the Cameron house – not surprising considering Fergus had presented the previous evening with injuries that required stitches. But there’s a problem. No blood is found in the Land Cruiser. Whoever killed Beth would be covered in blood. If Vivienne did drive the Land Cruiser to the scene of the murder, then to the bridge, surely there would be transference from the murder scene to the vehicle. But there isn’t. Bit by bit, the evidence starts to tell a different story. Learn more about your ad choices. Visit podcastchoices.com/adchoices