Here's one for the CW's Christmas stocking: Mia Kirshner has just signed up for a recurring role on 'The Vampire Diaries.'

The Ausiello Files confirms that the 'L Word' siren will play Isobel, wife of Matt Davis' history teacher, Alaric. Her character will be charming -- but with some serious bite, of course.

Kirshner is known primarily for her portrayal of Jenny Schecter on the Showtime drama 'The L Word,' a job she held from 2005-2009. She's also put in three solid appearances on '24', and has had significant roles in 'Not Another Teen Movie' and 'The Black Dahlia.'

Writers of The L Word are including the show's fans in a very unique way. They've started a 'fanisode' contest where fans team up with writers to script an episode one scene at a time. Each week, the writers will announce a scene mission on their website and fans create it. Then fans vote on which submissions they like the best. It's a process that repeats itself each week until an entire episode is created out of fan-chosen and fan-created scenes. However, writers are not guaranteeing that the particular episode will air.

The fans whose scenes are elected will receive prizes, mostly in the form of gift certificates or a piece of schwag from The L Word set. At the end of the competition, which is March 31, one of the previous winners will be randomly chosen for e-mail mentoring from one of The L Word's writers and a $1,000 gift certificate to Saks.