AceShowbiz -

"Bones" has tapped an unlikely guest star for its upcoming season. Comedienne Betty White has been billed to appear in an episode of the procedural series' 11th season. The 93-year-old actress announced the news via her Twitter, posting a message which read, "Wanted to let you know first that I will be joining the @BONESonFOX family for an upcoming episode this fall! #Bones."

As if it's not surprising enough, the veteran actress is set to play the Jeffersonian's newest squintern, Dr. Beth Mayer. She's brought in to consult on a murder linked to fantasy football. Dr. Mayer is described as sharp as a tack, experienced and fabulous. She's an expert of anthropology and fantasy football with more than half a century of experience under her belt.

Her arrival will create a conflict between her and Brennan (Emily Deschanel) as the two are competing with one another in a battle of wits to prove who is the smarter scientist. White's episode is scheduled to air in October.

"Bones" season 11 premieres Thursday, October 1 at 8 P.M. ET on FOX, with new showrunners John Collier and Michael Peterson replacing the departing Stephen Nathan. The network has planned a "Bones" and "Sleepy Hollow" crossover set to air on October 29, just in time for Halloween.