S4, EP7 "The Uncertainty Principle"
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.
S4, EP6 "Lim"
Dr. Audrey Lim struggles to cope with the residual emotional trauma of COVID-19; Dr. Claire Browne suggests a radical treatment to help a war veteran who has PTSD; Dr. Shaun Murphy declares he doesn't want to teach the new residents anymore.
S4, EP5 "Fault"
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.
S4, EP4 "Not the Same"
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.
S4, EP3 "Newbies"
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.
S4, EP2 "Frontline Part 2"
Dr. Shaun Murphy and the team try to get a better understanding of COVID-19; Claire looks for a way to grieve Melendez's death through her patients; Dr. Alex Park and Mia discuss their future together.
S4, EP1 "Frontline Part 1"
Dr. Murphy treats a patient who has an illness that is not only unpredictable in nature but also unlike anything he or the team have seen before; Dr. Claire Brown continues to work through her grief, still reeling from Dr. Neil Melendez's death.