Molly Kidder

The new interns are dazzled by the skill level of fellow intern George, while Lexie helps keep his "repeater" status a secret; Meredith half-heartedly helps Lexie with her first emergency patient.

The Seattle Grace staff continue to mourn George's death; George's mother arrives but is unsure of what to do with his organs.

The surgeons work as a team to free a boy from a hardening block of cement; Izzie helps Alex care for an ailing Rebecca; Meredith and Derek have one last chance at a positive result in their clinical trial.

Meredith and Derek rediscover the morning-after side of their relationship; the chief learns the hospital has slipped in the national rankings.

Meredith, Cristina, Izzie and Alex spend their first day as residents with their own interns, including George, repeating his internship after failing his exams, and Meredith's half-sister. Cristina searches for Burke, who is nowhere to be found and Richard resumes his position as chief of surgery.

A group of college students are rushed to Seattle Grace following a serious car crash on their way to the graduation ceremonies; Izzie continues feeling similar symptoms.