is the 14th episode of the fourth season of the medical drama Grey's Anatomy , which originally aired on May 8, 2008. Primary Plotlines
: Izzie Stevens discovers that Ava is not actually pregnant and is experiencing a psychological break, but she struggles with maintaining patient confidentiality versus telling Alex. [S4E14] The Becoming
: Richard Webber appoints George O'Malley to manage the new dating forms to prove he is delegating effectively to his wife, Adele. is the 14th episode of the fourth season
: Meredith Grey and Derek Shepherd admit a military veteran into their clinical trial. They work on synchronizing their virus injections into a tumor during a simulation. which originally aired on May 8