McNally's play, originally seen Off-Broadway at Manhattan Theatre Club, takes place on the deck of a beach house on Fire Island, where a brother and sister and their respective spouses attempt to celebrate the Fourth of July with a gnawing uncertainty about their lives and their futures.
The creative team will include John Lee Beatty (scenic design), Tom Broecker (costume design), Paul Gallo (lighting design), and Darron West (sound design).
Barnes, who will play John, previously appeared on Broadway in The Lieutenant of Inishmore. His other stage credits include Becky Shaw, Lady, St. Crispin's Day, Vengeance, and Hamlet.
Mullally, who will play Chloe, has appeared on Broadway in Young Frankenstein, Grease, and How to Succeed in Business Without Really Trying. She is best known for her Emmy Award-winning turn as Karen Walker on Will & Grace. Oswalt, who is making his Broadway debut as Sam, is one of America's most popular stand-up comics. Taylor, who will play Sally, has previously appeared on Broadway in the Roundabout's production of The Three Sisters.For further information, visit www.roundabouttheatre.org.