A sexually transmitted disease breaks out and affects several members of the hospital staff. Chief Webber promptly calls a meeting. Meanwhile, the chief reluctantly tells Dr. Derek Shepherd about his own medical concerns. Izzie and Cristina worry about a patient's wife and daughter who can't agree on his care. Burke treats his college buddy Bill, whose medical diagnosis raises some questions regarding his wife's actions. Then just as Meredith and Derek grow more intimate, a surprise is revealed.
Ellen Pompeo
Meredith Grey
Chandra Wilson
Miranda Bailey
James Pickens Jr.
Richard Webber
Caterina Scorsone
Amelia Shepherd
Camilla Luddington
Jo Wilson
Kim Raver
Teddy Altman
Jason George
Ben Warren
Chris Carmack
Atticus Lincoln
Anthony Hill
Winston Ndugu
Adelaide Kane
Jules Millin
Alexis Floyd
Simone Griffith
Niko Terho
Lucas Adams
