James Moses Black

A betrayal intensifies the issues between Cristina and Meredith; Matthew and April make a decision about their relationship; Bailey faces difficulties with Ben's return.

Lorelai learns that Rory slept with her married ex-boyfriend, Dean; Luke is relieved that Lorelai wants to pursue their romantic relationship; after announcing her separation from Richard, Emily leaves for Paris.

The team tracks a suspect targeting people in Detroit; Blake receives a life-changing proposition from her husband (D.W. Moffett).

A desperate situation tests familial and club bonds.

The team reopens the 1992 case of a 14-year-old inner-city math genius who was shot after his older brother started using him for the illegal benefit of a local gang.

An old army buddy and fellow surgeon visits Conrad at the hospital; the team is put to the test when they have to save the life of an uninsured and undocumented patient; Dr. Bell experiments with a new medication for his tremor.