‘The Flash’ Season 3 Spoilers: Guess Which ‘Vampire Diaries’ Character Is Coming To Central City

“The Vampire Diaries” alum Susan Walters will play Dr. Carla Tannhauser in the upcoming Season 3 of “The Flash.”

According to Entertainment Weekly, Dr. Tannhauser is Caitlin’s (Danielle Panabaker) mom , a world-renowned biomedical engineer and CEO of a big research company. Although Caitlin and  Dr. Tannhauser share an interest in the field of science, the two have long had a troubled relationship.