Yvonne Farrow

Alex gains the trust of Annie, a nervous patient with an extraordinarily large tumor, only to humiliate himself in front of her later. Meanwhile Derek chooses Meredith to assist with an elderly Parkinson's patient who may need surgery -- but Bailey disapproves of their relationship and is determined to make Meredith suffer -- and tensions escalate between Burke and Shepherd.

Sydney learns from Vaughn that her father may also be working for the FBI.

At his parents' insistence, Jerry is coached by personal trainer Izzy Mandelbaum (Lloyd Bridges) to lose weight.

Sloane is told that Sydney is the SD-6 mole, putting her life in danger; Dixon is shot; Will thinks Kate Jones' pin is the key to some unexpected information.

Sark kidnaps a mathmetician and his family.

Renegade Sloane has the secrets to a mysterious Rambaldi device; Vaughn begs Dixon to assist the CIA in rescuing Sydney.