The victim: John Colman. Not much is known about him, much less about his murder. His body was hastily buried and has never been found. A weapon was recovered, but it vanished. The only account of the crime is secondhand, pieced together from a few witnesses, some of whom might have harbored a grudge. The chief suspects were singled out because of racial profiling but were never questioned. No one was ever prosecuted. It was on Sept. 6, 1609 — 400 years ago Sunday — when this, the first recorded murder in what became metropolitan New York, was committed. Colman...