At around 6:20 on the morning of Tuesday, April 10, a forty-seven-year-old businessman named Tim Markham was on the last leg of his customary jog. Every weekday when he wasn't traveling, Markham would run out the driveway of his mansion on McLaren within minutes on either side of 5:45. He would turn right and then right again on Twenty-eighth Avenue, jog down to Geary, go left nearly a mile to Park Presidio, then left again back up to Lake. At Twenty-fifth, he'd jog a block right to Scenic Way, cut down Twenty-sixth, and finally turn back home on Seacliff where it ran above Phelan Beach.

In almost no other ways was Markham a creature of habit, but he rarely varied either the route of his run or the time he took it. This morning-garbage day in the neighborhood-he was struck by a car in the intersection just after he left the sidewalk making the turn from Scenic to Twenty-sixth. The impact threw him against one of the trash receptacles at the curb and covered him in refuse.

Markham had been jogging without his wallet and hence without benefit of identification. Although he was a white man in physically good health, he hadn't yet shaved this morning. The combination of the garbage surrounding him with his one-day growth of beard, his worn-down running shoes, and the old sweats and ski cap he wore made it possible to conclude that he was a homeless man who'd wandered into the upscale neighborhood.

When the paramedics arrived from the nearby fire station, they went right to work on him. Markham was bleeding from severe head trauma, maybe had punctured and collapsed a lung. He'd obviously broken several bones including his femur. If this break had cut an artery, it was a life-threatening injury all by itself. He would clearly need some blood transfusions and other serious trauma intervention immediately if he were going to have a chance to survive.