A doctor, though not having finished his studies, earns a living providing medical advice. A former nurse enters the stage, saying she hears voices from "the other world". At first, they can exploit gullible victims without problems, but soon the authorities begin showing in these quacks.
A young engineer borrows a suitcase from a friend, not knowing it countains ten thousand dollars inside. Soon after the friend dies in a car crash, and a lighter found at the scene might be key to solving the case.
