The thing that always intrigues me, ever since 5:13, is what happened between 1988 and 1998? The Elliston farm murders (likely committed by RJ) happened in 1988, yet Red John didn't officially start for another decade. So what was he doing in that 10 year period, and what happened to him?
If he went 10 years between his first few murders, and then became a notorious serial killer, it suggests one of 2 things:
1) Someone else committed the 1988 murders, and the smiley was just a graffiti incident that happened to take place on the same farm. RJ did the graffiti, but not the murders, or was inspired by the graffiti
2) Something seriously bad happened to RJ in that 10 year window, something that changed him from someone who killed 2 people probably out of deep personal loathing and self preservation (they weren't very pleasant bosses, drugging their workers and working them to near death), to a man who killed for personal pleasure and fame.
Your average serial killer will kill, then keep killing until they're caught, no 10 year breaks.
Hopefully all will be explained in 6 weeks, because it's been bugging me for a while, and i'm yet to find a logical reason for the change in behaviour from 88 to 98-present day
If anyone has answers, comments would be appreciated.