With Season 11 of Supernatural winding down, the show's producers are already planning ahead, since the show was renewed for Season 12 last month. E! Online reports that The Vampire Diaries star Elizabeth Blackmore has signed on for a guest-starring role in Season 11 of Supernatural, which will lead into a regular recurring role in Season 12. It isn't known exactly when the actress will make her debut on the show quite yet.

The report reveals that Elizabeth Blackmore is playing Lady Toni Bevill, a "mysterious visitor from across the pond," who has quite a bit in common with Sam (Jared Padalecki) and Dean Winchester (Jensen Ackles). Lady Toni Bevill will also return as a recurring character for an unspecified amount of episodes in Season 12. Since her character on The Vampire Diaries, Valerie, is still alive, the report speculates that the actress may end up pulling double duty on both shows, but that hasn't been confirmed.

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The CW renewed all 11 of its shows last month, ordering new seasons of Jane the Virgin (Season 3), Crazy Ex-Girlfriend (Season 2), The Flash (Season 3), iZombie (Season 3), Arrow (Season 5), Supernatural (Season 12), DC's Legends of Tomorrow (Season 2), The 100 (Season 4), The Vampire Diaries (Season 8), The Originals (Season 4) and Reign (Season 4). The network hasn't announced premiere dates yet, but it seems likely that Supernatural, the network's longest-running show, will stay put in its Wednesday 9 PM ET time slot.

Sam and Dean have spent their lives on the road, battling every kind of supernatural threat. Over the years, after countless bloody adventures, they have faced everything from the yellow-eyed demon that killed their mother to vampires, ghosts, shapeshifters, angels and fallen gods. With the help of allies - both human and supernatural - they've discovered that every victory comes with a price. Supernatural is produced by Wonderland Sound and Vision in association with Warner Bros. Television, with executive producers Jeremy Carver, Robert Singer and Philip Sgriccia. Eric Kripke created the TV series and serves as executive consultant, along with McG.

Elizabeth Blackmore joined The Vampire Diaries in Season 7, portraying a heretic named Valerie. Since she isn't a series regular, it's possible that she could continue to recur on The Vampire Diaries while also portraying Lady Toni Bevill on Supernatural at the same time. The actress has a two-episode arc in the upcoming season of AMC's Turn: Washington's Spies, which debuts later this month. What do you think about this new addition to the Supernatural cast?