Check out the synopsis and a promo for the next episode of Supernatural, titled “Pac-Man Fever” and featuring the return of a fan favorite character, below.

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

DEAN INTRODUCES CHARLIE TO CHEAP PANTSUITS — Concerned about the physical toll the second trial took on Sam (Jared Padalecki), Dean (Jensen Ackles) benches his brother from hunting until he heals up. So, when geektastic hacker Charlie (guest star Felicia Day) stumbles upon a case and finds the boys, Dean decides it’s time to teach Charlie how to be a hunter-in-training. While happy to see “her highness,” the boys suspect Charlie is hiding something; a secret that could get her killed. Robert Singer directed the episode written by Robbie Thompson (#820).

This will mark Charlie’s third appearance in the show, after season 7’s “The Girl With the Dungeons and Dragons Tattoo” and season 8’s “LARP and the Real Girl.” After helping the Winchesters in their fight against Dick Roman, Charlie disappeared, only to resurface on a case the brothers were looking into involving live action roleplaying.

It’s also worth noting that Robbie Thompson, the writer of this episode, wrote the other two episodes Charlie has appeared in. Thompson’s other credits include season 7’s “Slash Fiction” and “Time After Time,” as well as season 8’s “Bitten” and “Goodbye Stranger.”

We also have a promo for the episode:

“Pac-Man Fever” airs Wednesday, April 24 at 9:00 p.m. ET.