The God King is a 1974 British–Sri Lankan historical film directed by Lester James Peries.
The film is based on the historical clash between brothers Kasyapa and Moggalana on Sigiriya Rock.
Producer Dimitri de Grunwald financed the epic film as a dual project between England and Sri Lanka.
Kasyapa had murdered his father by walling him alive and then usurping the throne, which rightfully belonged to his brother Mogallana (Ravindra Randeniya), Dhatusena's son by the true queen.
In India he raised an army with the intention of returning and retaking the throne of Sri Lanka which was rightfully his.