When Grey's Anatomy returns just one week from today, the focal point will be Mark's pregnant daughter, Sloane, her condition and her impact on Mark and Lexie's relationship.

This drama will spill over into an episode of Private Practice in the 10 p.m. time slot. Here's a promo for "Blink" and its Private Practice conclusion, "Another Second Chance" ...

[video url="http://www.tvfanatic.com/videos/2010-crossover-event-promo/" title="2010 Crossover Event Promo"] [/video]

Follow the jump for a second, longer preview of the two-hour crossover event ...

[video url="http://www.tvfanatic.com/videos/2010-crossover-event-promo-2/" title="2010 Crossover Event Promo #2"] [/video]

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