The Big Cube

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. It is notable for its aggressive portrayal of LSD use and the 1960s youth counterculture as vicious evils. Plot Adriana Roman, a successful stage actress, retires to marry Charles Winthrop, a wealthy tycoon. Winthrop's daughter, Lisa, is instantly distrustful of Adriana solely because she is "the other woman" taking her father's affection. Charles is killed in a boating accident, which also leads to Adriana suffering from a concussion. Lisa's new boyfriend Johnny Allen, a womanizing, fortune-hunting medical student, capitalizes on that distrust to persuade Lisa that her father's death was murder, a charge exacerbated by Adriana's threat—as per her late husband's instructions as laid out in his will, for which Adriana is executor—to disinherit Lisa if she marries Johnny. Johnny conspires with Lisa to lace Adriana's prescribed sedatives with enough LSD to drive her insane. During one of the episodes, Adriana hallucinates that Johnny and Lisa are attempting to throw her over a cliffside after taking her on a drive into the country. Later, while Adriana has further LSD-induced hallucinations at home, Johnny plays pre-recorded subliminal messages to further drive her crazy, one of which instructs Adriana to leap from a window—Lisa is unaware of this scheme. As Adriana is about to jump to her probable death, Lisa saves her. While still unaware of Johnny's true intent, Lisa continues with their plan and Adriana is committed to a mental hospital, where they have Adriana declared legally insane and thus unable to carry out her obligations in Charles' will.