Shannon Welles

Medical intern John "J.D." Dorian (Zach Braff) embarks on a career at a hospital abundant with unpredictable staffers and patients.

Season Three premiere. Sookie turns to Eric for help finding Bill; Andy urges Jason to stay the course; Sam reconnects with his past; and Tara seeks refuge from her grief.

Cristina looks to Meredith for advice as she assesses her future at the hospital. Derek and Amelia work together on a difficult surgery involving conjoined twins. Meanwhile, Jo is spread too thin when she tries to work on several cases at once and Stephanie realizes the truth about Bailey's bubble boy case.

Melinda helps the spirit of an ex-con seek forgiveness for his sins and make amends to his wife and son.

Sabrina's good intentions go bad when she prevents Valerie from trying out for the cheerleading squad.