Wait, wait. There's a time-related thing we have, regarding the phone calls, and a time-related thing here, the hour and the minute. They may be related. I'll check that quick.

EDIT: OK, so one of the times on the Phone records is 8:51. That is a minute apart. That cannot be a coincidence. It may be (rather irritatingly) that the Stalkers are using multiple aliases this time to keep their tracks close, or that, more grimly, one of the Stalkers is one of the Police Officers (as naturally, they would have access to Aqua Gear for this kind of situation). I'd suggest interviewing the remaining police officers soon.