en Cuevana 3. The documentary examines Myra Hindley's psyche, the nature of her relationship with Ian Brady, her background, and time in prison. When Moors murderer Myra Hindley died on 15 November, she was Britain's longest serving woman prisoner - spending 36 years in jail. Hindley was jailed for life in 1966 for murdering two children with her lover Ian Brady.