I picked up the report and began to read. Apparently someone had driven a vehicle belonging to a Mr. Darius Starzak into a canal and then fled the scene. Mr. Starzak himself was thus far unavailable for questioning. It took me several long moments of blinking and sipping the vile coffee to realize that this was the report of my incident this morning, and several minutes longer to decide what to do about it.

To have the name of the car's owner was little enough to go on-almost nothing, since the odds were good that the car was stolen. But to assume that and do nothing was worse than trying it and coming up empty, so I went to work once again on my computer.

First, the standard stuff: the car's registration, which showed an address off Old Cutler Road in a somewhat pricey neighborhood. Next, the police records: traffic stops, outstanding warrants, child support payments. There was nothing. Mr. Starzak was apparently a model citizen who'd had no contact at all with the long arm of the law.

All right then; the name itself, "Darius Starzak." Darius was not a common name-at least, not in the United States. I checked immigration records. And surprisingly, I got a hit right away.

First of all, it was Dr. Starzak, not Mister. He held a Ph.D. in religious philosophy from Heidelberg University, and until a few years ago had been a tenured professor at the University of Kraków. A little more digging revealed that he had been fired for some kind of uncertain scandal. Polish is not really one of my stronger languages, although I can say kielbasa when ordering lunch at a deli. But unless the translation was completely off, Starzak had been fired for membership in an illegal society.

The file did not mention why a European scholar who had lost his job for such an obscure reason would want to follow me and then drive his car into a canal. It seemed like a significant omission. Nevertheless, I printed the picture of Starzak from the immigration file. I squinted at the photo, trying to imagine it half hidden by the large sunglasses I had seen in the Avalon's side mirror. It could have been him. It could also have been Elvis. And as far as I knew, Elvis had just as much reason to follow me as Starzak.

I went a little deeper. It isn't easy for a forensics wonk to access Interpol without an official reason, even when he is charming and clever. But after playing my online version of dodgeball for a few minutes, I got into the central records, and here things became more interesting.