In 1954, two teenage girls, Pauline Parker and Juliet Hulme orchestrated and carried out the murder of Pauline's mother in Victoria Park in Christchurch, New Zealand. Their attempt to cover up the death as an accident quickly fell apart, and both girls were charged with murder. When their trial began, rumours of insanity and homosexuality consumed the Christchurch population as people speculated about the motivations around the seemingly cold and callous murder of Honorah Parker.

On June 21st, 2004, 43-year-old Jim Donnelly signed into work at the Glenbrook Steel Mill. 16 years later, Jim still hasn't signed out. Despite a wide-ranging search, and investigation of Jim's personal life, there is very limited evidence as to what happened to him, leading to plenty of speculation and unique theories about his disappearance. To this day, Jim's family is no closer to finding out what happened, and without new evidence or witness information, they may never know.

Frederick Valentich was a 20-year-old man, training to become a pilot. In late October 1978, during a solo flight between Melbourne and King Island, Frederick made radio contact with Air Services to report a suspicious unidentified aircraft circling around his plane. The contact lasted for a few minutes, ending with some metallic scraping noises, and then silence. Despite a large-scale air and sea search, no trace of Frederick was ever found, leading people to ask, was his disappearance related to the "unidentified flying object", or did he fall victim to an unfortunate pilot's error?

On the 29th of August 2016, Mark and Jacoba Tromp, and their 3 adult children, left their red currant farm in Melbourne's outer suburbs for an "off-the-grid" roadtrip. Far from home, the family became separated, and they were unable to be located as their behaviour became increasingly erratic and disoriented. Police located the missing family members 6 days later, and over 400km apart, but none were able to offer any insight as to the motives for their impulse getaway.