Dr Shaun Murphy and the team treat a young girl whose father's personal research complicates their treatment plans; Dr Park, Dr Reznick and Dr Lim's patient refuses a lifesaving lung transplant.
A former Guantanamo guard is taken hostage by a group of terrorists, and Eric is surprised to learn that his best chance at saving the man's life is to work with a former detainee.
Eric and Oliver plunge into a world of espionage when a CIA spy disguised as an American diamond broker is kidnapped in Vienna. Also, Oliver gets an interesting job offer.