Glee is an American musical comedy-drama television series that airs on Fox in the United States, and on Global and Fox Canada in Canada. It touches on the high school glee club New Directions competing on the show choir competition circuit, while its members deal with relationships, sexuality and social issues. The initial main cast encompassed club director and Spanish teacher Will Schuester (Matthew Morrison), cheerleading coach Sue Sylvester (Jane Lynch), guidance counselor Emma Pillsbury (Jayma Mays), Will's ex-wife Terri (Jessalyn Gilsig), and eight club members played by Dianna Agron, Chris Colfer, Kevin McHale, Lea Michele, Cory Monteith, Amber Riley, Mark Salling and Jenna Ushkowitz. For the second season, formerly recurring cast members Mike O'Malley, Heather Morris and Naya Rivera were promoted to the main cast.
Ryan Murphy has confirmed that all regular cast members from the third season will be returning to the show for its fourth season, though "it doesn't mean everyone will be doing 22 episodes".
The fourth season will continue to be set at McKinley High in Ohio and follow several of the just-graduated characters to New York, and will be set at a performing arts school there. The Ohio portion of the show will feature a number of new characters. Two actresses have been announced for multi-episode guest-starring arcs as part of the New York sequences: Sarah Jessica Parker and Kate Hudson
. Parker's character will be a mentor to Kurt, and Hudson's a mentor to Rachel; Hudson will be appearing in six episodes during the fall.