In this episode, we hear from one of the few surviving witnesses from the night Sandra Rivett was killed.  Chris Baddick was a rookie policeman who attended the murder scene after Lady Lucan raised the alarm at the nearby Plumbers Arms. Later that night, he was sent to Lucan’s mother’s address in north London, where he overheard a telephone call from the prime suspect. Both barristers agree that Mr Baddick’s evidence is important in understanding the chaos at 46, Lower Belgrave Street as forensic experts searched for evidence. We also hear from forensic expert Allan Jamieson, who talks about the techniques used to examine crime scenes and evidence at the time.  The Trial of Lord Lucan is an innovative week-long podcast event where you the listener, are the jury. It's not too late to get involved - listen to the whole series this week and get involved at dailymail.co.uk/lucan. Hosts: Caroline Cheetham and Stephen Wright Producers: Caroline Cheetham, Sam Morris, Mark Machado Editor: Chelsey Moore Production Manager: Vittoria Cecchini Executive Producer: Jamie East A Daily Mail production. Seriously Popular. Hosted on Acast. See acast.com/privacy for more information. Learn more about your ad choices. Visit podcastchoices.com/adchoices