'Grey's Anatomy' Season 12 Trailer Released.

Grey's Anatomy Season 12 kicks off on September 24.

Meredith adapts to new living arrangements and Bailey fights to be Chief of Surgery despite her fierce competition on the season premiere of Grey's Anatomy, airing September 24 at 8 p.m. ET/PT on ABC.

In the episode, titled "Sledgehammer," Grey Sloan Memorial springs into action to save the lives of two young girls whose powerful story will force some of the doctors to revisit the effects of bullying on their own pasts. Meanwhile, Meredith (Ellen Pompeo) must adjust to changes at home with her new roommates while Bailey (Chandra Wilson) continues to fight for the Chief of Surgery position and Jackson (Jesse Williams) prepares for April’s (Sarah Drew) return to Seattle.

Check out the Season 12 Trailer below:

'Grey's Anatomy' Returns Tonight (Sneak Peek)

Grey's Anatomy returns tonight. Photo Credit: ABC

Meredith and April are business as usual at the hospital despite turmoil in their personal lives in tonight's return of Grey's Anatomy, airing at 8 p.m. ET/PT on ABC.

In the episode, titled "Where Do We Go From Here," as Derek prepares for his move to DC, Meredith keeps herself busy at the hospital. Meanwhile, Jackson and April deal with difficult news, and Arizona and Amelia discuss how to best approach Dr. Herman.

Watch a sneak peek below:

'Grey's Anatomy' Winter Finale Sneak Peek

The winter finale of Grey's Anatomy airs November 20 on ABC.

The Grey's Anatomy winter finale airs Thursday, November 20 at 8 p.m. ET/PT on ABC.

In the episode, titled "Risk," 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.

Watch a sneak peek video below:

Ellen Pompeo, Kerry Washington & Viola Davis Talk 'Shondaland Thursday' with Shonda Rhimes (Video)

To hype its newly christened "Shondaland Thursday," ABC has released an extended promo that features Shonda Rhimes chatting with Grey's Anatomy's Ellen Pompeo, Scandal's Kerry Washington and How to Get Away with Murder's Viola Davis about their historic one-two-three punch — which launches Thursday, September 25. Watch below: