Michael Patrick Thornton

Naomi struggles with the idea of genetically designing babies; Violet suddenly decides to try electric shock therapy on a patient.

The doctors launch an investigation after Betsey's second emergency room visit; Naomi makes a life-changing decision; Amelia continues to struggle with sobriety.

When the lives of Addison's patient and her three unborn babies hang in the balance, Sam's new girlfriend and Addison are divided on the course of treatment; Cooper wants Sheldon's help with a young patient; Naomi faces a dilemma.

When a famed neurosurgeon and her team visit St. Ambrose, Addison is surprised to see Derek's younger sister on the team; Charlotte and Cooper try to figure out how to work together.

Maya's announcement shocks Sam and Naomi; Pete challenges Fife on a patient with a cutting-edge bionic arm.

The hospital must keep a surrogate mother on life support until her fetuses are able to survive; Naomi discovers that Addison and Sam have feelings for each other.