Remember when Shannon Lucio showed up on Season 2 of The OC as Lindsay and immediately inserted herself between couple of DESTINY Marissa and Ryan? And how, even though she was totally delightful even while struggling through a difficult time wherein Caleb Cooper was revealed to be her father, you just hated her?

Or ... was that just us?

Anyways, get ready for Shannon to play spoiler again! Entertainment Weekly reports that the 29-year-old actress has been cast on True Blood as Bill Compton's original love, Caroline. You know, the woman he married back in his human days, who he desperately wanted to go back to after he was turned into a vampire?

Yeah. Something tells us this might get in between True Blood couple of DESTINY Sookie and Bill. Then again -- maybe that gives Eric a chance?

In other True casting news, EW adds that producers have found Sam's shape-shifting little bro, Tommy -- Prison Break star Marshall Allman. Seriously, we can't wait to learn more about the furry Trammell family.

What do you think about the new additions?

PHOTO SOURCE: Sara DeBoer/Retna Ltd.