The CW has released the official synopsis for the eleventh episode of Supernatural‘s eighth season, titled “LARP and the Real Girl,” which will feature a fan favorite guest star.

The official press release has the following information about the episode:

FELICIA DAY RETURNS! — Sam (Jared Padalecki) and Dean (Jensen Ackles) investigate the mysterious deaths of two LARPers (Live Action Role Playing) who were playing a game entitled Moondoor. The guys are thrilled to discover the Queen of Moondoor is none other than Charlie (guest star Felicia Day). The three learn that a fairy (guest star Tiffany Dupont) has been commandeered to harm people and the only way to stop her is to find her master. Jeannot Szwarc directed the episode written by Robbie Thompson.

Day, a Joss Whedon alum and sci-fi genre staple, previously guest starred in season 7′s “The Girl with the Dungeons and Dragons Tattoo” as Charlie Bradbury, a fangirl hacker who worked with the Winchesters to fight Dick Roman.

Supernatural returns from winter hiatus on January 16 with the tenth episode of the season, “Torn and Frayed.” Read the episode synopsis here.

“LARP and the Real Girl” airs Wednesday, January 23 at 9 p.m. ET.

Are you looking forward to Felicia Day’s return to ‘Supernatural’?