Kaoru sits at the computer looking grumpy. The liquid crystal monitor shows videos taken by the security camera at the front entrance. The image is clear. The time of day is displayed in a corner of the screen. Checking her penciled notes against the time on the monitor, Kaoru uses the mouse to make the image fast-forward and stop. The procedure does not seem to be going well. Now and then she looks at the ceiling and sighs.Komugi and Korogi walk in.“Whatcha doin’, Kaoru?” Komugi asks.“Whoa, you sure don’t look happy!” Korogi adds.“Security-camera DVD,” Kaoru answers, glaring at the screen. “If I check right around that time, we can probably tell who beat her up.”“But we had all kinds of customers coming and going then. Think we can tell which one did it?” Komugi says.Kaoru’s thick fingers tap clumsily at the keys. “All the other customers were couples, but that guy came alone and waited for the woman in the room. He picked up the key to 404 at 10:52, and she got delivered on the motorcycle ten minutes later.