Beware, Mystic Falls.

A trio of new blood suckers are on the way.

Sources have confirmed that Scarlett Byrne (Falling Skies) and Teressa Liane (Neighbours) will come on board The Vampire Diaries Season 7 as Heretics Nora and Mary Louise, the show’s first-ver same-sex couple.

These women have been in a mostly secret relationship for a century and are fiercely protective of one another.

Then there’s Elizabeth Blackmore. The former Legend of the Seeker will portray Valerie, a violent Heretic with many past struggles who is definitely NOT about peace.

The Vampire Diaries Season 7 will premiere on Thursday, October 8 and include somewhat of a time jump.

Check out the following slideshow to see what else is on tap for Season 7...

The Vampire Diaries at Comic-Con: Old Damon, New Villains and More

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... and then watch all of our exclusive interviews with the main cast members from Comic-Con:

The Vampire Diaries Cast Teases Season 7, Time Jumps, Demise of Mystic Falls

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Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.