Beth Behrs to guest star in 'Shifting Gears' season 3, reuniting with '2 Broke Girls' co-star Kat Dennings

Beth Behrs will guest star in the upcoming third season of ABC's 'Shifting Gears,' reuniting with her '2 Broke Girls' co-star Kat Dennings. Behrs will play an ER doctor treating Dennings' character.