Sam calls Quincy at Danny's with a strange case: an accident victim with very unusual blood test results. The man died from an small gash on his forehead, because his blood could not clot. Monohan arrests the driver, who was discovered with a small amount of cocaine that he claims belonged to the passenger. To clear the driver's name, Quincy and Sam must discover exactly how the dead man received a lethal dose of radiation. He works at a nuclear power plant, but the type of radioactive material there could not have caused his death. So where was he exposed? And why?