This "classical" BBC series was inspired by the +Orestia Trilogy of 5th century Greek playwright Aeschylus, as filtered through the contemporary eyes of prolific British playwrights Frederic Raphael and Kenneth MacLeish. The project boasted an all-star cast, headed by Denis Quilley as Agamemnon, Diana Rigg as Klytamnestra, and Helen Mirren as Cassandra.