Molly Kidder

Bailey leads a team of doctors performing a string of surgeries in which each procedure depends on the one that preceded it; Derek gets all the credit for the brain tumor study he did with Meredith; Lexie tries hard to get George to notice her.

A freak ice storm brings trauma patients to Seattle Grace; Meredith and Derek discover that "happily ever after" isn't easy; a mysterious military doctor catches Cristina's eye.

Cristina, back from her honeymoon trip, searches in vain for Burke; Meredith, Cristina, Izzie and Alex spend their first day as residents with their own groups of interns.

Derek finds an old diary of Meredith's mother; Callie anxiously prepares for her first real date with Erica; Cristina stumbles into a part of the hospital that she and the other residents have never seen.

Meredith and Derek get one last shot at success in their clinical trial; the surgeons work together to free a boy from a block of cement; Izzie helps Alex care for Rebecca; Lexie uncovers critical information about George's status as an intern.

A plumbing leak becomes a flood, causing chaos at Seattle Grace; the chief tries to implement new teaching policies; George tries to take his residency exam again; Derek hopes to move Meredith's roommates out of her house.