In 2013, Helen Milner was found guilty of drugging her husband in order to get the life insurance payout.
Four years earlier, she had convinced police her husband killed himself.
Helen Milner was found guilty of the murder and attempted murder of her husband, Philip Nisbet, who was found dead in their Halswell home on 4 May 2009. Photo: GETTY IMAGES
But Lee-Anne Cartier, the victim's sister, felt something was off and began her own investigation.
NZ Herald reporter Kurt Bayer followed the case through the courts - it was dubbed The Black Widow case.
Listen free on Apple Podcasts, Spotify, iHeartRadio, Google Podcasts or any good podcast app.
