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In February 1986, nurse Anita Cobby is savagely raped and murdered by five young men, beginning one of Australia's most notorious criminal cases.

When a little girl tells the telephone operator that her sleeping mummy is turning black, he knows something is very wrong at the sheep shearer's house.

An investigation into the story of David and Catherine Birnie, Australia's most sadistic husband and wife killing team who tortured, raped, and murdered four women in 1986.

In the 1970s and '80s, Sallie-Anne Huckstepp and Juanita Nielsen drove Kings Cross' scene. But challenging the status quo only led to their mysterious and violent deaths.

Peter Laurence is a charismatic government minister on the verge of promotion to high office. He is celebrating a win in a libel case, but an inmate at a women's prison claims to have a secret that could affect his future.

This documentary was inspired by an incident in which journalist Jorge Ramos was ejected from a Donald Trump press conference and told by the presidential candidate to "go back to Univision".

Zoo operator Joe Exotic gave one of his last interviews to Animal Planet before his arrest. In this heartwarming story of the rescue of four big cats from his zoo, we hear from ex-employees, rescue organisations, and Joe himself.

A look at the Mornington Monster, a man who killed his wife, infant daughter and unborn child. Also, the suspicious death of a wealthy nightclub entrepreneur.

Eight bodies are found in six barrels filled with acid in a former bank vault in rural Snowtown, 50km north of Adelaide. Police discover four more bodies.

In 1997, Bega High School students and best friends Lauren Barry and Nichole Collins had their young lives tragically cut short after being held captive for 12 horrendous hours.

In 1993, Karen MacKenzie and her three children were violently murdered at their isolated home. It will forever be known as one of the most horrific murders in Australian criminal history.

Dr Victor Chang was a famous surgeon on the brink of implanting the world's first artificial heart. In a failed extortion attempt he was fatally shot dead in the street.

Donald Bruce Mackay was an Australian businessman. He was also a prominent substance abuse campaigner who came to media attention and fame in 1977. Then he was murdered.

How did torture, first justified by fear of the Communist threat and then as part of the fight against terrorism, become the norm in the US? As soon as the World War II ended, the Americans, impressed by the supposed ability of the Soviet authorities to extort false confessions, became interested in brainwashing. With the complicity of unscrupulous academics and doctors, the CIA began developing techniques that could break the human spirit without leaving any physical trace. Compiled in the Kubark Manual in 1963, these techniques went on to be used in Afghanistan, Guantanamo, Iraq, and at black sites across the world. Today, some are still employed on terror suspects on American soil. Through the testimonies of specialists and witnesses, both victims and torturers, examine 70 years of torture and recount how the United States transformed the practice of torture into a state-sanctioned practice.

A documentary six-months in the making that uncovers stunning new evidence in the now infamous Lindy Chamberlain case. The 7News Spotlight team reveals previously unreleased police recordings from the investigation into the death of Azaria Chamberlain and the wrongful conviction of her mother, Lindy.

The FLDS, Children of God, and Unification Church are some of the most notorious cults in recent history. Survivors Lamont Barlow, Amy Bril, and Teddy Hose join Elizabeth Vargas and cult expert Janja Lalich in a rare discussion about their lives growing up in these high profile groups.

Cult survivors Samie Brosseau, Sarah Edmondson, Romy Maple, and Elijah Muhammad join Elizabeth Vargas and cult expert Janja Lalich in a rare roundtable discussion.