The 1928 murder of Elsie Walker is one of New Zealand's oldest cold cases. She disappeared from the Bay of Plenty and her body was discovered by schoolboys, days later, in Auckland.

Elsie Walker went missing from the Bay of Plenty and was found dead in Auckland days later.

She was discovered by some young boys and was still wearing her maid's uniform.

Crime author, Scott Bainbridge wrote about this mysterious case in his book Shot in the Dark. He talks to Charlotte Ryan about the details of Elsie's life and death.

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In 2009, Taito Phillip Field was convicted of bribery and corruption and sentenced to six years in prison. Lockwood Smith was an opposition MP and recalls keeping the pressure on in parliament, to ensure Field was held to account.

Taito Phillip Field was a minister in the Labour government when he was accused of using his position for personal gain.

The Right Honourable Sir Lockwood Smith was Opposition spokesperson on Immigration when the allegations first came to light and maintained continued pressure on the Minister during parliament question time.

Taito Phillip Field eventually went to prison following a police investigation, becoming the first member of parliament to be convicted of bribery and corruption in New Zealand.

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In 2007, 20-year-old Emma Agnew put a sign up in her car advertising it for sale. A man answered the ad, but he wasn't interested in buying the car. As Stuff senior reporter Martin Van Beynan describes his intentions were far more sinister.

20-year-old Emma Agnew disappeared in November 2007.

Emma and her entire immediate family were deaf and well-known within New Zealand's deaf community.

The alarm was raised almost immediately, but it would be 12 days before her body would be found in forest north of Christchurch.

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Emma Ferris loaned $300,000 to her boyfriend only to discover he was conning her. In this episode of Crimes NZ, Emma describes the battle for her life-savings and her future.

In 2018 Emma Ferris began relationship with Andrew Thomson, an entrepreneur with colourful stories about his past and future ventures.

Emma loaned a large sum to the conman believing it was destined for legitimate investment. The very next day she found out he wasn't who he said he was.

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In 1886 the bustling town of Timaru was stunned when society darling Thomas Hall was arrested for the attempted murder of his wife, Kitty. Author Peter Graham outlines one of the most sensational cases of 19th century New Zealand.

In 1886, as he sentenced Thomas Hall to life in prison for the attempted poisoning of his wife Kitty Hall, the presiding judge said: "You have achieved in the annals of crime the position of being the vilest criminal ever tried in New Zealand."

Tom Hall was part of a rich and influential family in Timaru, but when he ran into financial troubles, his solution was to marry a rich wife, have a child with her and then kill her.

Peter Graham, author of Vile Crimes: the Timaru Poisonings recounts his discoveries of what might be New Zealand's first celebrity trial.

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David Bain spent 13 years in prison after being found guilty of killing his family in 1994 - however he always maintained his innocence and he was acquitted in a retrial in 2009.

On the 24th of June, 1994, Robin (58) and Margaret Bain (50) and three of their children, Arawa (19), Laniet (18) and Stephen (14), were found dead in their Dunedin home.

Four days later, the only surviving family member - 22 year-old David Bain - was arrested for their murders.

Martin van Beynan's written extensively on the Bain family murders, including his own podcast Black Hands.

David Bain was found guilty of murder in 1995 and sentenced to 16 years in prison.

But in 2009, he was acquitted at a retrial.

Stuff senior reporter Martin van Baynen sat through the three month retrial and does not believe the evidence pointing to Robin Bain being the murder stacks up.

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The presiding judge described the death of Delcelia Witika as one of the most disturbing cases of child abuse to come before the High Court. David Mcloughlin covered the case.

Delcelia Witika's mother and stepfather were both were sentenced to 16 years in jail, for her manslaughter.

A judge described this case as the most disturbing to come before the High Court.

Delcelia was just two years old when she died as a result of peritonitis, caused by blows to her stomach.

Former Herald journalist, David McLoughlin, recalls covering the case and the dramatic revelation of a video showing the couple partying while the toddler was at home dying.

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In November 1990, thirteen people were shot and killed in the seaside village of Aramoana. Tim Ashton was a member of the anti-terrorism squad that was sent in to stop the gunman.

Thirty-three year-old David Gray began shooting after a confrontation with one of his neighbours over a dog.

By the end of his rampage, 13 people were dead and several others were injured.

The police's anti-terrorism squad was sent in to stop David Gray's shooting rampage.

It is New Zealand's second deadliest mass shooting, after the Christchurch mosque attacks which saw 51 people killed.

Tim Ashton was a member of the Anti-Terrorist Squad who was sent in to stop Gray. He shares his recollections of the day and his subsequent battle to change gun legislation.

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David Ross was jailed in 2013 for running a ponzi scheme that resulted in thousands of New Zealand investors losing millions of dollars.

David Ross, the former director of the failed company Ross Asset Management, was jailed in November 2013 for 10 years and 10 months, with a minimum non-parole period of half that time.

The ponzi scheme he'd been running collapsed in 2012, owing investors $115 million.

Ross's fraudulent scheme was frozen in 2012 with 200 investors who had made money and 600 who lost money.

A year later, he pleaded guilty to charges laid by the Serious Fraud Office and the Financial Markets Authority.

At the conclusion of the trial, Judge Denys Barry called Ross a liar and a thief and said the scale of his offending is unprecedented in New Zealand.

Former New Zealand Herald Wellington business editor Hamish Rutherford describes how he came to follow the story and what he discovered.

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In 1987, pig hunters stumbled upon the body of Robert Gawith kicking off a murder inquiry with links to the infamous Mr Asia drug syndicate.

It was a case that sparked headlines like 'NZ's Bonnie and Clyde' or 'Lawless Lovers' when it was discovered that a couple with links to the Mr Asia crime syndicate were behind the murder of 23 year-old Robert Gawith.

Robert Gawith was celebrating a hefty payout when he was brutally murdered by couple Patrick and Jennifer Norton-Bennett.

Former police officer, Wayne Kiely worked on the case and talks about how the death of the young man was solved and became the undoing of a key player in the Mr Asia Drug syndicate.

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