Sutton Foster is dancing her way over to Psych.

The former Bunheads star will appear on the special Season 8 finale of this beloved USA Network hit, coming on board as a middle school teacher who may be having a fling with Billy Zabka's gym teacher.

The episode, titled A Nightmare on State Street," will be directed by James Today and its storyline was voted on by fans in an online poll.

Look for the finale to focus on a sleep-deprived Gus and the odd problems he encounters after undergoing dream therapy. Among others, it will also feature Bruce Campbell, Dean Cameron and Phylicia Rashad.

Watch our exclusive interview with Roday and Dule Hill as Comic-Con for more on this unique installment.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.