Gyllenhaal 's sister Maggie makes her Broadway debut this season opposite Cynthia Nixon and Ewan McGregor in Tom Stoppard 's `` The Real Thing , '' due to begin in October . The actor will appear in ` ` Constellations '' He made his Broadway debut in 2014 . His sister , Sarah , makes her Broadway debut this season .
The actor will appear in ` ` Constellations '' He made his Broadway debut in 2014 . His sister , Sarah , makes her Broadway debut this season .