When near dead killed girl tell PJ about 3 dots tattoo on killer left hand , i think that Hafner kill her. Why?
In that episode when Van Pelt Lisbon and Heffner alone in hotel room where murder is done , watch carefull when Hefner see spider on the couch , and he told he is scared and hate spiders. Maybe that 3 dots isnt really tatoo , but it is a spider bites on hand , whick obvies belong to Hafner.
So Hefner is RJ or almost right hand of RJ