Sorry, Mark and Lexie haters, but that couple is a go. They seem to be progressing...and fast. From the looks of the sneak peek above, plus the morning-after sneak peek you can see inside, they might even have a genuine love connection.

What else can you expect in Thursday's all-new Grey's Anatomy? Well, as you'll see in the clips below, Jessica Capshaw joins the crew as a saucy pediatric surgeon, Eric Stoltz makes his first appearance as a patient from death row, and one other thing happens...what is it?

Oh yeah: Izzie finally tells Alex about Denny. Aaah!

See how that goes down...

Grey's Anatomy returns Thursday at 9 p.m. on ABC.

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