Michael Roark

Isobel (recurring guest star MIA KIRSHNER – The L Word, 24) returns to town and stuns Alaric with her attitude and her demands that he arrange a meeting with Elena.

Elena and Alaric both lash out at John when Isobel’s unexpected arrival leaves Jenna devastated. Bonnie works with Damon and Jeremy to find the spell they’ll need to harness her ancestors’ power. A heartbroken Caroline doesn’t know what to do about Matt. Stefan and Damon realize they have a new secret weapon.

Dr. Hope Martin (recurring guest star SHARON LAWRENCE) returns to ask Maura for a life-altering favor. Jane worries about the impending spinal surgery for Lt. Col. Casey Jones (recurring guest star CHRIS VANCE), and Tommy (recurring guest star COLIN EGGLESFIELD) shows off baby T.J. But all gets shoved to the side when a building collapses, trapping loved ones inside.

Maggie and Meredith disagree with Derek about the best way to approach a patient's case, which leads to a bigger argument between the couple. Meanwhile, Callie feels responsible when one of her veterans is pushed too far and one doctor's routine procedure results in a devastating diagnosis, on the winter finale.

Lt. Abbie Mills and Ichabod Crane search for Abbie's estranged sister, Jenny, who has escaped from a Sleepy Hollow psychiatric hospital. In a game-changing episode, which includes flashbacks to the real Boston Tea Party, Abbie and Ichabod discover more about the evil they are facing... and finally learn its name.