Caulfield to guest star on 'Once'

LOS ANGELES, Dec. 26 (UPI) -- Emma Caulfield, who played a vengeance demon on "Buffy the Vampire Slayer," will guest star as a blind witch on the U.S. series, "Once Upon a Time," ABC said.

Caulfield is to appear on the Jan. 15 episode of the fairytale-themed series, the network said.

The installment will be a retelling of the Hansel and Gretel legend.

"Once Upon a Time" stars Ginnifer Goodwin as Snow White/Mary Margaret, Jennifer Morrison as Emma Swan, Robert Carlyle as Rumplestiltskin/Mr. Gold, Lana Parrilla as Evil Queen/Regina, Jared Gilmore as Henry Mills, Josh Dallas as Prince Charming/David and Raphael Sbarge as Jiminy Cricket/Archie Hopper.