Michael Patrick Thornton

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

Naomi seeks Fife's help with William's experimental treatment for ALS; Violet and Amelia treat a woman with a brain tumor; Sheldon goes after Charlotte's affections.

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.

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.

Addison, Amelia and Fife try to save Maya and her unborn child; Sam makes a grim discovery; Cooper makes a valiant effort with Charlotte; an unexpected death leaves everyone stunned.

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