Born in Rome, DeMejo was the eldest son of jazz composer Oscar De Mejo and actress Alida Valli. [2 ] After a few minor roles, he had his breakout with the role of a male prostitute in Pier Paolo Pasolini's Teorema (1968). [2 ] In 1970, he…
V roce 1944 se provdala za hudebního skladatele Oscara deMejo a odešli spolu do USA, uzavřela smlouvu s producentem Davidem O. Selznickem a hrála titulní roli v Hitchcockově filmu Případ Paradineová, vystupovala také v Lux Radio Theatre.