A doctor from Starship Children’s Hospital is questioned on all the big mysteries in the case including that Lachie was found face up, had no water in his lungs and had no external injuries.

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As the line-up of experts continues, we go on a crash course on the inner workings of the Gore sewerage ponds, and we hear yet another opinion on whether Lachie could have made it all the way out there by himself.

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In today’s episode, The Depot, three months after giving evidence in the first phase of the inquest, Michelle Officer presents a new sworn statement that changes her account of her movements at the depot that afternoon, but a contractor who works from the same depot says Lachie and his mother weren’t there.

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Robin Bates, lawyer for the police, goes into full Crown prosecutor mode, as he tries to dent the findings, methodology and conclusion in former forensic detective Karen Smith’s report.

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Robin Bates, the lawyer representing the police, goes head to head with former forensic detective Karen Smith.

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In today’s episode, Staged As An Accident, Karen Smith details timelines, distances, witness statements and the 111 call, and explains how she reached her conclusion that Lachie’s death was staged to look like an accident. 

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Karen Smith lays out the system failures, biases and exactly what went wrong with the investigation into Lachie’s death - and questions why the NZ police are so obstinate in this case.

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A forensic pathologist and a retired forensic detective, both Americans, give evidence in the Invercargill courtroom and fiercely defend their views – one emphatic Lachie drowned, the other who says his death was staged.

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The controversy steps up a notch when a Wellington based forensic pathologist enters the frame and is intractable on Lachie’s cause of death.

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Speculation and hypothetical scenarios are thrown around the courtroom, as the absence of a forensic autopsy limits options.

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