IRINA ABKADINA, an actress CONSTANTINE TREPLIEFF, her son PETER SORIN, her brother NINA ZARIETCHNAYA, a young girl, the daughter of a rich landowner ILIA SHAMRAEFF, the manager of SORIN'S estate PAULINA, his wife MASHA, their daughter BORIS TRIGORIN, an author EUGENE DORN, a doctor SIMON MEDVIEDENKO, a schoolmaster JACOB, a workman A COOK A MAIDSERVANT The scene is laid on SORIN'S estate. Two years elapse between the third and fourth acts.