The multi-hyphenate actress — she created, writes and stars in the popular web series The Guild — will guest-star in an upcoming Season 7 episode of the CW series, TVGuide.com reports.
Day will play a low-level tech at one of Dick Roman’s companies in the April 27 installment, “The Girl With the Dungeons and Dragons Tattoo,” which is, of course, a nod to Steig Larsson’s The Girl With the Dragon Tattoo book trilogy.
As an amateur computer hacker, Day’s alter ego “unwittingly gets wrapped up in Sam and Dean’s problems,” says executive producer Sera Gamble. “It’s a classic story of an everyday girl who does not want to be in a whistleblower position.”
In addition to The Guild, Day starred in Joss Whedon’s web musical Dr. Horrible’s Sing-Along Blog. On the TV side, she’s appeared in such genre/sci-fi fare as Buffy the Vampire Slayer, Dollhouse and Eureka.