The Big Cube is a 1969 American psychological-thriller film directed by Tito Davison and starring Lana Turner, Karin Mossberg, George Chakiris, Daniel O'Herlihy and Richard Egan.

Its plot follows an aging former actress who is dosed with LSD by her malicious stepdaughter, seeking to drive her mad and obtain her fortune.

Frederick decides to write a play detailing Adriana's traumatic experiences and casts her in the lead role.

[1] In January 1968, Motion Pictures International (MPI) negotiated a co-production agreement with the Mexico-based Producciones Anco to produce the film, based on a screenplay written by William Douglas Lansford.

[1] The Big Cube was released theatrically in the United States on April 30, 1969, opening regionally in Cincinnati, Ohio.

[1][2] It continued to open in several U.S. cities throughout May 1969, including Philadelphia, Pennsylvania; Chicago, Illinois; Portland, Oregon; and Boston, Massachusetts.

[1] The Big Cube was released on DVD in 2007 as part of Volume 2 of Warner Brothers' Cult Camp Classic's "Women in Peril" series, a three-part series that included John Cromwell's Caged (1950) and the film that gave Joan Crawford her last starring role, Freddie Francis' Trog (1970).