'Grey's Anatomy' Winter Finale Sneak Peek: Is Meredith Alex's First Priority?

Jo and Alex have it out about Meredith.

Owen is force to acknowledge hsi past on his week's episode of Grey's Anatomy, airing Thursday, November 19 at 8 p.m. ET/PT on ABC.

In "Things We Lost In the Fire," as the rumor mill around the hospital continues to spiral out of control, Grey Sloan Memorial is flooded with injured firefighters from a nearby wildfire. Maggie struggles to keep things with Andrew professional at work; meanwhile, Jo questions Alex's priorities.

In the sneak peek video below, Jo finally confronts Alex about his close friendship with Meredith. She accuses Alex of always making Meredith his first priority, even above his own girlfriend. Alex gets defensive, and accidentally says that Meredith is the only one he can count on. That's going to make things awkward!

'Grey's Anatomy' Sneak Peek: Let Me Go

Grey's Anatomy airs Thursday at 8 p.m. ET/PT on ABC.

The tension between the doctors rises on this week's episode of Grey's Anatomy, airing Thursday, November 12 at 8 p.m. ET/PT on ABC.

In "Something Against You," the team of doctors work on a high stakes case of a long time patient, adding additional pressure to an already tense environment. Meanwhile, Bailey wants Ben to kick out their new roommate, and Arizona is eager to get back into the dating world with a new wingman.

In the sneak peek video below, Meredith treats Penny with kid gloves after Derek's death. Penny finally has had enough and confronts Meredith.

'Grey's Anatomy' Sneak Peek: Can Meredith Rise Above?

Grey's Anatomy airs Thursday at 8 p.m. ET/PT on ABC.

April reunites with an old friend from overseas on this week's episode of Grey's Anatomy, airing Thursday, November 5 at 8 p.m. ET/PT on ABC.

In "The Me Nobody Knows," Grey Sloan Memorial not only welcomes a new transfer resident, but also a patient who's the topic of conversation after accidently sending his sex tape to his entire congregation. Meanwhile, Richard wrestles with how to progress his relationship with Maggie when an old friend visits the hospital, and April brings in a case of a young boy from the Middle-East.

In the sneak peek video below, it's Penny Blake's first day as a resident at Grey Sloan Memorial, and, of course, she's assigned to Meredith's service. Amelia is angry when she finds out, but Meredith explains she's trying to rise above, and Amelia should too. "No, you should have ended it. That night!" Amelia snaps.

'Grey's Anatomy' Sneak Peek: Dinner Party From Hell

Photo Credit: ABC/Mitchell Haaseth

Maggie deals with an embarrassing issue and everyone finally meets Callie's girlfriend on tonight's episode of Grey's Anatomy, airing at 8 p.m. ET/PT on ABC.

In "Guess Who's Coming to Dinner?" Maggie ditches her cooking duties to rush to the hospital in the midst of the sisters' dinner party. Meanwhile, April steps in to help cook as an attempt to avoid Jackson, and Arizona nervously waits to find out more about Callie's new girlfriend.

In the sneak peek video below, as Callie proudly introduces her new girlfriend Penny to everyone, Meredith is desperately trying to hide how upset she is. She rushes upstairs to be alone, because coming face-to-face with Penny, the resident who treated Derek the night he died, has triggered an avalanche of flashbacks to that terrible night.

'Grey's Anatomy' Sneak Peek: Maggie Regrets Her One-Night Stand

Maggie (Kelly McCreary) and Andrew (Giacomo Gianniotti).
Photo Credit: ABC/John Fleenor

Stephanie reveals her past and the sisters prepare for a dinner party at their house on tonight's episode of Grey's Anatomy, airing at 8 p.m. ET/PT on ABC.

In "Old Time Rock'n Roll," Owen suggests the interns learn a vital lesson on how to break bad news to patients' families, and Arizona's 90-year-old patient reassures her that she's destined to find love again. Meanwhile, the sisters completely forget about the dinner party they're hosting for everyone.

In the sneak peek video below, Maggie wakes up immediately regretting her one-night stand with the intern. She tells DeLuca to get out of the house without anyone seeing him, but of course he runs into Amelia in the hallway. Maggie's hot hookup isn't going to remain secret for long.

'Grey's Anatomy' Sneak Peek: I Choose You

Stephanie urges Jo to talk to Alex.

Alex feels the weight is on his shoulders on tonight's episode of Grey's Anatomy, airing at 8 p.m. ET/PT on ABC.

In "I Choose You," Maggie reevaluates her life choices after receiving an invitation to her ex-boyfriend's wedding; Richard questions Bailey's loyalty, and Jo confides in Stephanie about a secret she's been keeping from Alex.

Meanwhile, Alex struggles with making a difficult decision that will affect the lives of newborn twins.

In the sneak peek video below, Jo makes a confession to Stephanie, and Stephanie urges Jo to talk to Alex about it. Jo catches Alex off guard when she, apropos of nothing, asks if he wants kids.

'Grey's Anatomy' Sneak Peek: There's a New Chief in Town

Chandra Wilson and Jason George. Photo by Richard Cartwright/ABC

Congratulations are in order for Grey Sloan Memorial's new Chief of Surgery on tonight's episode of Grey's Anatomy, airing at 8 p.m. ET/PT on ABC.

In "Walking Tall," the pressure is on as a determined Bailey tackles her first day as Chief.

Meanwhile, April’s marriage is in jeopardy and she finds herself unable to address her problems; Meredith struggles to juggle all her responsibilities and Amelia works to define her relationship with Owen.

Watch a sneak peek below:

'Grey's Anatomy' Season 12 Premiere Preview

Giacomo Gianniotti, Joe Adler and Joe Dinicol.
Photo Credit: ABC/Richard Cartwright

Meredith adapts to new living arrangements and Bailey fights to be Chief of Surgery on the Season 12 premiere of Grey's Anatomy, airing Thursday, September 24 at 8 p.m. ET/PT on ABC.

In the episode, "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 must adjust to changes at home with her new roommates while Bailey continues to fight for the Chief of Surgery position and Jackson prepares for April’s return to Seattle.

Watch the Grey's Season 12 trailer below: