King overhears the doctor paying a patient after he had given her an injection in the doctor's office. King believes he is being blackmailed but is unsure why. After talking to the doctor's wife, King and Fox are even more determined to find out why. When the woman dies in his office the police become involved. King goes undercover and tries to prove her husband and/or his girlfriend murdered her somehow. The real story is far more complex.
—jem