If RJ is truly just like PJ, then he would be as skillful at misdirection and manipulation as Patrick.

If so, wouldn't everything that Patrick knows be exactly what RJ wanted him to know. The list, the tattoo, Sophie's tape that Pj found in a minute of searching, etc etc.

I cannot predict what started RJ to start killing or who he is. But remember, from what we do know, it wasn't PJ. Rather PJ insulted a serial killer. PJ put himself in the line of fire.

What if RJ has a much larger plot? Much like the joker from Batman. Chaos. Thwart law. Etc.

All I'm saying is we all have been looking to closely at what we know from RJ instead of rather why we know it and what bigger picture is there? That surely is what PJ is really thinking about. Much like we see every episode. This is just in a bigger context.