Calvin reads his quiz question. Joe and Jack leave their homes at the same time, driving toward each other. One drives 60 mph, the other 30 mph. They pass in ten minutes. How far apart were they when they started? Calvin looks at the paper. Calvin is in his office, hat on, feet propped up, cigarette in mouth. He says "It was another baffling case. But then, you don't hire a private eye for the easy ones". Tracer Bullet is here.