WATCH: Go behind-the-scenes on the all-new "The Break Up" episode of GLEE

GLEE: Pictured L-R: Harry Shum Jr., Jenna Ushkowitz, Mark Salling, Heather Morris, Chord Overstreet, Amber Riley, Melissa Benoist, Jacob Artist, Kevin McHale, Jane Lynch, Matthew Morrison, Darren Criss, Becca Tobin, Chris Colfer, Naya Rivera, Cory Monteith, Lea Michele and Dean Geyer.

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By FOX50.com

Story Created: Oct 3, 2012 at 10:44 AM EDT

Story Updated: Oct 3, 2012 at 10:46 AM EDT

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Rachel and Kurt are caught off-guard when they get unexpected visits in New York City. Meanwhile, Santana and Brittany deal with the long distance between them, and Will and Emma disagree on a new job offer in the all-new “The Break Up” episode of GLEE airing Thursday, Oct. 4 (9:00-10:00 PM) on FOX 50. (GLE-404) (TV-14 D, L)

Cast: Matthew Morrison as Will Schuester; Jane Lynch as Sue Sylvester; Lea Michele as Rachel Berry; Cory Monteith as Finn Hudson; Chris Colfer as Kurt; Kevin McHale as Artie; Amber Riley as Mercedes; Mark Salling as Puck; Jenna Ushkowitz as Tina; Naya Rivera as Santana Lopez; Dianna Agron as Quinn; Heather Morris as Brittany; Darren Criss as Blaine Anderson; Chord Overstreet as Sam Evans; and Jayma Mays as Emma Pillsbury.

Guest Cast: Vanessa Lengies as Sugar Motta; Samuel Larsen as Joe Hart; Jacob Artist as Jake Puckerman; Melissa Benoist as Marley Rose; Dean Geyer as Brody Weston; Becca Tobin as Kitty; Iqbal Theba as Principal Figgins; and Alex Newell as Wade Adams.