 Quincy and his girlfriend Barbara are driving up the coast on vacation when they are nearly run off the road by a young woman who is driving very erratically. She drives off the road and when Quince arrives at the wreck he discovers that she is dead. When Quincy performs the autopsy on her, he discovers that she died as a result of internal bleeding despite the fact that the wreck wasn t that serious. The next day, a police officer, who was inspecting the car, dies of apparently the same thing the woman did. However, things really become emotional for Quincy when Sam is also stricken. Now he must find out what it is about the car that is killing people or else Sam will suffer the same fate.