About Glee Season 4, Episode 6 : Glease

Rachel and Kurt pay a visit to Lima as the glee club launches its production of "Grease". Meanwhile, Cassandra July returns to shake things up in Rachel's life, and Santana comes back to lend a helping hand. Guest Stars: Melissa Benoist, Jacob Artist, Becca Tobin, Blake Jenner, Alex Newell, Mark Christopher Lawrence, Davenia McFadden, Dean Geyer, Trisha Rae Stahl, Kate Hudson, Vanessa Lengies, Samuel Larsen, Iqbal Theba,