Brian "Sene" Marc

Morgan and Shaun's pregnant patient with twins has pain, forcing the doctors to grapple with a decision no one wants to make; Shaun asks Lea to move back in despite her reservations.

With several candidates vying for residency at St. Bonaventure, Lim tasks Shaun, Claire and Alex with mentoring the top first-year resident contenders; Shaun inadvertently insults Lea while discussing the pros and cons of a controversial surgery.

Dr. Murphy questions his decision to give the new residents autonomy when an intern's misdiagnosis has dire consequences; a patient has a ruptured cyst affecting key functions of her brain; Dr. Morgan Reznick and Park bond over failed relationships.

Dr. Morgan Reznik discovers her patient's wealth and obsession with extending his life is a dangerous mix that could end up costing more than he can afford.

When a renowned surgeon comes to St. Bonaventure for treatment, the team's enthusiasm is quickly overshadowed by the doctor's behavior; Shaun and Lea are forced to make a life-changing decision that will alter the course of their relationship.

The team treats a teenage gymnast who experiences complications from her intensive training; Shaun meets Lea's parents for the first time.