Per a post on the WoF alums site on Facebook, I have found out that Immani Brown-Turner from December 23, 2016 has been invited back to play at the very end of this month (Fri. November 30 during European Vacation). According to her, it was due to her buzzer malfunction during the third Tossup.
Good luck again, Immani!
WHEEL of FORTUNE with Andy Nguyen 
WOW! This is the first time in almost 11 years this has happened! Best of luck!
On the 2/28/2008 episode, Hannah Lee was brought back to the show and won big.
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Looking forward to seeing Immani play again. Good luck again Immani!
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So is it only in rare circumstances that contestants get to return I’m guessing?
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