Grey's Anatomy has been on hiatus since airing an all-encompassing festive episode in November. Thanksgiving, Christmas and New Year's were all rolled into one "Holidaze."

Next week, the show finally returns with "Blink," which kick-starts another crossover event with Private Practice. At the center of the action is Sloane. As in Mark's daughter.

Her condition brings Addison back to Seattle Grace, and the sparks between McSteamy and his former flame will fly again. What will that mean for Mark and Lexie's future?

We'll have to wait and see. Elsewhere, something is definitely going on with Meredith and the Chief, as she reveals to Derek in this sneak preview clip from next Thursday ...

[video url="http://www.tvfanatic.com/videos/blink-sneak-preview-1/" title="Blink Sneak Preview #1"] [/video]

Follow the jump for four more clips from "Blink," which include heavy doses of the visiting Dr. Montgomery, as well as a tense OR confrontation between Teddy and Owen ...

[video url="http://www.tvfanatic.com/videos/blink-sneak-preview-2/" title="Blink Sneak Preview #2"] [/video]

[video url="http://www.tvfanatic.com/videos/blink-sneak-preview-3/" title="Blink Sneak Preview #3"] [/video]

[video url="http://www.tvfanatic.com/videos/blink-sneak-preview-4/" title="Blink Sneak Preview #4"] [/video]

[video url="http://www.tvfanatic.com/videos/blink-sneak-preview-5/" title="Blink Sneak Preview #5"] [/video]

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.