Orestes: A Tragedy is a play written by Richard Le Gallienne and first published in 1910. The play is based on the Greek myth of Orestes, the son of Agamemnon and Clytemnestra, who seeks revenge for his father's murder. The story follows Orestes as he returns to his homeland to avenge his father's death, with the help of his sister, Electra. However, as the plot unfolds, Orestes becomes plagued with guilt and madness, leading to a tragic conclusion...