Pete's brother (Kyle Secor) brings their mother (Louise Fletcher) in for a consultation; Violet catches Sheldon asking her archenemy for a date; Cooper treats a young music prodigy who has a brain tumor.

Sheldon falls for the critic who panned Violet's book; a patient is caught in a love triangle with her brother-in-law and sister; Cooper and Sam try to convince a family to put a boy's health above his wrestling career.

A woman and her husband want to harvest their unborn baby's eggs; a woman threatens suicide if she tests positive for Huntington's disease; Fife returns to share his feelings with Naomi.

Cooper and Charlotte try to forgive each other after revealing secrets in couples therapy; one of Sheldon's patients claims to have multiple personality disorder; Naomi and Sam treat a pregnant teen who has Down syndrome.

When Addison goes home to Connecticut to deal with a family tragedy, Sam and her friends decide to tag along; Sheldon and Violet fight over a death row patient's confession.

Charlotte's attacker (Nicholas Brendon) arrives at the hospital in need of urgent care; Bizzy begs Addison for help when Susan's health deteriorates.

Addison tries to keep her distance from flirtatious Dr. Rodriguez (Cristián de la Fuente); Sam worries about the care a patient is receiving; Sheldon refers Charlotte to a friend for psychiatric help.

Emotions are stirred up at the practice when Dell's daughter arrives; a pregnant woman experiences chronic pain.

The man responsible for killing Dell and endangering Maya's life comes to the clinic with a heart condition; news of Addison's new romance is not received well.

Violet and Cooper make changes to their friendship to appease their significant others; Pete and Cooper argue over a patient's (Justine Bateman) marijuana use; Addison debates going public with her new romance.

Pete and Violet prepare for their wedding day; things take a surprising turn with Addison and Sam; despite disagreements, the doctors come together to mourn the loss of Dell.