It was two weeks before Charlie left the apartment and walked down to the auto-teller on Columbus Avenue where he first killed a guy. His weapon of choice was the number forty-one bus, on its way from the Trans Bay station, by the Bay Bridge, to the Presidio, by the Golden Gate Bridge. If you’re going to get hit by a bus in San Francisco, you want to go with the forty-one, because you can pretty much figure on there being a nice bridge view.

Charlie hadn’t really counted on killing a guy that morning. He had hoped to get some twenties for the register at the thrift store, check his balance, and maybe pick up some yellow mustard at the deli. (Charlie was not a brown mustard kind of guy. Brown mustard was the condiment equivalent of skydiving—it was okay for race-car drivers and serial killers, but for Charlie, a fine line of French’s yellow was all the spice that life required.) After the funeral, friends and relatives had left a mountain of cold cuts in Charlie’s fridge, which was all he’d eaten for the past two weeks, but now he was down to ham, dark rye, and premixed Enfamil formula, none of which was tolerable without yellow mustard. He’d secured the yellow squeeze bottle and felt safer now with it in his jacket pocket, but when the bus hit the guy, mustard completely slipped Charlie’s mind.