Sharon Marie Tate (January 24, 1943 – August 9, 1969) was an American actress. During the 1960s she played small television roles before appearing in several films. After receiving positive reviews for her comedic performances, she was hailed as one of Hollywood's promising newcomers and was nominated for a Golden Globe Award for her performance in Valley of the Dolls (1967). She also appeared regularly in fashion magazines as a model and cover girl.

Married to film director Roman Polanski in 1968, Tate was eight and a half months pregnant when she was murdered in her home, along with four others, by followers of Charles Manson.

A decade after the murders, Tate's mother, Doris, in response to the growing cult status of the killers and the possibility that any of them might be granted parole, organized a public campaign against what she considered shortcomings in the state's corrections system. It resulted in amendments to the California criminal law in 1982, which allowed crime victims and their families to make victim impact statements during sentencing and at parole hearings.

The Tate is an institution that houses the United Kingdom's national collection of British Art, and International Modern and Contemporary Art. It is a network of four art museums: Tate Britain, London (previously known as the Tate Gallery, founded 1897), Tate Liverpool (founded 1988), Tate St Ives, Cornwall (founded 1993) and Tate Modern, London (founded 2000), with a complementary website, Tate Online (created 1998). There are plans to open a TATE in Southampton in 2020. It is an executive non-departmental public body of the Department for Culture, Media and Sport.

Tate is used as the operating name for the corporate body which was established by the Museums and Galleries Act 1992 as The Board of Trustees of the Tate Gallery.

The gallery was founded in 1897, as the National Gallery of British Art. When its role was changed to include the national collection of Modern Art as well as the national collection of British art, in 1932, it was renamed the Tate Gallery after sugar magnate Henry Tate of Tate & Lyle, who had laid the foundations for the collection. The Tate Gallery was housed in the current building occupied by Tate Britain which is situated in Millbank, London. In 2000, the Tate Gallery transformed itself into the current-day Tate, or the Tate Modern, which consists of a federation of four museums: Tate Britain which displays the collection of British art from 1500 to the present day; Tate Modern which is also in London, houses the Tate's collection of British and International Modern and Contemporary Art from 1900 to the present day. Tate Liverpool, in Liverpool has the same purpose as Tate Modern but on a smaller scale, and Tate St Ives displays Modern and Contemporary Art by artists who have connections with the area. All four museums share the Tate Collection. One of the Tate's most publicised art events is the awarding of the annual Turner Prize, which takes place at Tate Britain.

Roman Polanski (born 18 August 1933) is a French-Polish film director, producer, writer and actor. Having made films in Poland, Britain, France and the USA, he is considered one of the few "truly international filmmakers." Polanski's films have inspired diverse directors, including the Coen brothers,Atom Egoyan,Darren Aronofsky,Park Chan-wook,Abel Ferrara, and Wes Craven.

Born in Paris to Polish parents, he moved with his family back to Poland in 1937, shortly before the outbreak of World War II. He survived the Holocaust and was educated in Poland and became a director of both art house and commercial films. Polanski's first feature-length film, Knife in the Water (1962), made in Poland, was nominated for a United States Academy Award for Best Foreign Language Film but was beaten by Federico Fellini's 8½. He has since received five more Oscar nominations, along with two Baftas, four Césars, a Golden Globe Award and the Palme d'Or of the Cannes Film Festival in France. In the United Kingdom he directed three films, beginning with Repulsion (1965). In 1968 he moved to the United States, and cemented his status by directing the Oscar-winning horror film Rosemary's Baby (1968).

Charles Milles Manson (born November 12, 1934) is an American criminal who led what became known as the Manson Family, a quasi-commune that arose in California in the late 1960s. He was found guilty of conspiracy to commit the Tate/LaBianca murders carried out by members of the group at his instruction. He was convicted of the murders through the joint-responsibility rule, which makes each member of a conspiracy guilty of crimes his fellow conspirators commit in furtherance of the conspiracy's objective.

Manson believed in what he called "Helter Skelter," a term he took from the song of the same name by The Beatles. Manson believed Helter Skelter to be an impending apocalyptic race war, which he described in his own version of the lyrics to the Beatles' song. He believed his murders would help precipitate that war. From the beginning of his notoriety, a pop culture arose around him in which he ultimately became an emblem of insanity, violence and the macabre. The term was later used by Manson prosecutor Vincent Bugliosi as the title of a book he wrote about the Manson murders.

Susan Denise Atkins (May 7, 1948 – September 24, 2009) was a convicted American serial killer who was a member of the "Manson family", led by Charles Manson. Manson and his followers committed a series of nine murders at four locations in California, over a period of five weeks in the summer of 1969. Known within the Manson family as Sadie Mae Glutz, Atkins was convicted for her participation in eight of these killings, including the most notorious, the "Tate/LaBianca" murders. She was sentenced to death, which was subsequently commuted to life in prison. Incarcerated from October 1, 1969 until her death, Atkins was the longest-incarcerated female inmate in the California penal system, having been denied parole 18 times.

Born in San Gabriel, California, the second of three children, Atkins grew up in Northern California. Both her parents, Edward John and Jeanette, were, according to her, alcoholics. Her mother died of cancer in 1963. Over the next three years, Atkins' life was disrupted by the gradual breakup of her family, frequent moves, and her leaving home to live independently. Atkins and her family lived in a middle-class home in the Cambrian Park area of San Jose, California, until she was 13. She was described by those who knew her as a quiet, self-conscious girl who belonged to her school's glee club and the local church choir. Two weeks before her mother was hospitalized for the final time, Atkins arranged for members of the church choir to sing Christmas carols under her bedroom window. After Jeanette Atkins' death, relatives were asked to help look after Atkins and her two brothers.