The play focuses on a brother and sister who find that hidden truths come to the fore as they clean out her cottage in the forest on one stormy night.
Fox is best known for his Emmy Award and Golden Globe-nominated portrayal of Dr. Jack Shephard on Lost. Among his other television and film credits are Party of Five, Speed Racer, Vantage Point, Smokin' Aces and We Are Marshall.
Williams' stage credits include Love's Labour's Lost, Hotel in Amsterdam, The Changeling, and Happy Now?. Her film and television credits include The Ghost, An Education, The Heart of Me, Dollhouse, Miss Austen Regrets, Emma, and Friends.