With Philip Polkinghorne being interviewed at the police station, detectives decide to step up their search of his house. Amid tests for fingerprints, DNA and blood - a hunt dubbed unprecedented by the detective sergeant in charge of the scene - officers make a series of discoveries that shape the investigation. But in court they’re asked if police and forensic scientists might have made up their minds too soon.WARNING: This podcast references suicide right from the start and throughout the episode. Some listeners might find this distressing. Click here for where to get help in New Zealand.Podcasts like this take lots of time and resources to produce, which is why we'd love you to support our work by becoming a subscriber! You can subscribe to Stuff Extra directly in Apple Podcasts, or Click Here to listen on other platforms.Learn more about your ad choices. Visit megaphone.fm/adchoices