“Once Upon a Time in Ancient Greece: Stheno’s Descent into the Underworld,” a comedy by Laramie Dean will be presented October 5 at 3:00 p. m. Doors  to the upstairs meeting room will open at 2:30 p. m. and a question and answer session with the actors and director will follow the show. Refreshments will be provided and the play is free. The Montana repertory theatre’s performance at the Library is sponsored by the Friends of the Lewistown Public Library.