In July 1985, the Greenpeace ship ‘Rainbow Warrior’ was bombed while moored in the Port of Auckland, as it waited to lead a protest against nuclear testing in French Polynesia. Tragically, Greenpeace photographer, Fernando Pereira, was killed after becoming trapped in his cabin as it filled with water. While the attack seemed unprovoked, Greenpeace immediately pointed the finger at the French Government, who had wanted to stop the protests going ahead.

Remaining unsolved for more than 2 decades, the Claremont serial killings held the city of Perth captive in the late 1990s. 3 girls all going missing in the early hours of the morning on their way home from a night out had put the city on edge, but police were drawing blanks. It wasn’t until a breakthrough in forensic science in 2016 enabled investigators to join the DNA dots and link the crimes to a known offender.

In May 1895, Minnie Dean boarded a train in Invercargill holding a baby and a hatbox. When she alighted the train on her return, she only possessed the hatbox, which railway porters remarked was ‘suspiciously heavy’. The Station Guard alerted New Zealand police to the possibility of a missing baby. In reality, they had a much larger problem on their hands - the systemic issue of what was dubbed "baby-farming" in New Zealand.

On the 17th of December 1967, Australian Prime Minister, Harold Holt, was spending a relaxing Sunday at his beach house in Portsea, Victoria. Holt wanted to swim before lunch to ‘work up an appetite’, but when he went into the water, he was quickly swept out of his depth and disappeared beneath the waves. A mammoth search ensued, but no trace of Holt was found. Did he drown in the rough conditions, or was there something more sinister lurking beneath the surface?

On the 20th of May 1999, South Australian police closed in the key suspects in a string of unsolved missing persons' cases. Their investigation led them to a disused bank vault in Snowtown, a tiny town north of Adelaide. When they got closer to the vault, police were overwhelmed by a horrific smell emanating from 6 barrels, which contained the bodies of 8 missing people.

On the morning of June 20th 1994, 5 members of the Bain family were murdered in their Dunedin home. The only surviving member, David Bain, was suspected of killing his whole family and staging it as a murder-suicide committed by his father, Robin. For the next 12 years, David defended his innocence through multiple appeals. To this day, we still don’t really know just what happened in the Bain house that morning.

After serving 16 years behind bars for the murder of Kim Barry in 1980, Graham Potter was staring down the barrel of another lengthy sentence after police busted the drug ring he was working for. Since he failed to appear in the Melbourne Magistrates Court in February 2010, he has been evading authorities. Some believe he is working on a cattle station, others think he has met a natural demise in the croc-infested waters of Far North Queensland. 10 years later, Graham Potter remains Australia's Most Wanted Man.

When 22-year-old English backpacker Grace Millane doesn’t return her parents calls for three days after her birthday, they become worried and contact New Zealand police. What her parents and police didn’t know was that Grace may not have even made it to her 23rd birthday, after a Tinder date put her in a fatal situation.

After finishing school on the 19th of August 1986, 9yo Samantha Knight had walked home, waving happily to a neighbour as she arrived at her mother’s flat in Bondi. She changed out of her school uniform and had something to eat. Knowing her mother wasn’t due home until 6 pm, she walked down to the local pharmacy to buy a new toothbrush, and that was the last time she would ever be seen.