By Michael Ausiello
March 15, 2010 at 04:25 PM EDT

Kudos to the HR folks over at The Office on their latest blockbuster hire: Sources confirm to me exclusively that the sublime and criminally underrated Amy Pietz is joining the cast for multiple episodes.

Pietz — best known from her supporting stints on Caroline in the City, Aliens in America, and Rodney — will first air in April and… um… er… that’s pretty much all I can tell you at this point. Suffice it to say her character description is laced with more than a few spoilers.

Of course, don’t let that stop you from speculating in the comments. Also, feel free to echo my sentiments re: Pietz (and please explain to me why she isn’t a bigger star).