John O'Brien

Everyone seems to know who the father of Rachel's unborn baby is except for the man himself: Ross. When he finds out, he is more concerned with other matters than his relationship with Rachel. Meanwhile, Phoebe and Joey fib about a gas leak to gain entry to Monica and Chandler's apartment.

After taking a loan from Evelyn, Alan is guilted into double-dating with her, her new romantic interest and his daughter.

Cristina's encounter with a former nurse, now a patient at Seattle Grace, changes her forever; Derek and Meredith treat a construction worker who has miraculously survived an injury but is now faced with tough decisions about his future; and a patient recognizes Izzie from a lingerie ad, which makes her the subject of hospital gossip.

The truth is in short supply, as Meredith and Cristina lie to each other about the status of their relationships, George is given the unpleasant task of discharging an elderly patient who is no longer sick but refuses to leave the hospital; and Alex learns his fate after re-taking his medical exams.

Meredith and Lexie's father returns to Seattle Grace with stomach pains and a new girlfriend; Alex butts heads with the new OB; Mark bribes Jackson for information on Lexie.

More positive changes are made by the hospital's new management; Meredith worries about her unborn baby; Alex decides to give Jo's boyfriend a run for his money.