Harlequin, known as Dark Forces in the USA, is a 1980 Australian film starring Robert Powell, Carmen Duncan, David Hemmings and Broderick Crawford. The screenplay is by Everett De Roche, the music by Brian May and the film is directed by Simon Wincer.The film is a modern-day version of the Rasputin story, and the major characters have the same first names as Rasputin and the Romanov royal family, and their family name 'Rast' is simply 'Tsar' backwards. Hemmings plays an up-and-coming senator, Nick Rast, whose young son is terminally ill with leukaemia. A mysterious faith healer, Gregory Wolfe (Powell), appears and seems to cure the boy. Rast's wife Sandy (Duncan) falls in love with Wolfe, but the powerful interests behind Rast's career, represented by geriatric monster Doc Wheelan (Crawford) are less happy with events.