Man and Machine (TWS)

There is other stuff you can do, but I think that the longer you wait before busting Rayt's place the less chance you have of finding anything useful there. I say go there now with all haste -- and bring as much security as you need to potentially take on a man who might be able to make your eyes explode by tapping you on the cheek.

Once you're there you might be able to find people who've seen him or more footage of his comings and goings.