After a homeless woman dies under his care due to a sudden carotid artery rupture, Shaun becomes obsessed with performing an unauthorized autopsy to find the underlying cause. Despite refusal from his superiors, he eventually finds closure with the help of his ex-girlfriend, Dr. Carly Lever , discovering the woman had a genetic disease she likely passed to her son.
This episode centers on fixation on finding the cause of death for a Jane Doe patient, while simultaneously navigating significant shifts in his personal life. [S3E16] Autopsy
Following his breakup with Carly, Shaun admits he is in love with his best friend, Lea Dilallo . In a heartbreaking final scene, Lea tells Shaun she loves him too but rejects a romantic relationship because she believes her "messy" personality and his need for structure—exacerbated by his autism—would make them incompatible. Other Shows with Similar Episode Numbers or Themes After a homeless woman dies under his care