I find I curious how we didn't get to see a face to his 'dead' body in last Sunday' episode but only a burned shoulder. It's way to obvious for it to be Bertram, why would RJ be careful and fail to be careful because of a simple tattoo. It was on purpose, the showing of the tattoo, Oscar Cordero being there to witness it all.

My guess is that it's either Partridge or Haffner. If you look at the promo for 6x08 you'll hear a voice that is suppose to be RJ voice. Partridge and Haffner have very strange voices, well different you know. I like both these men for it, they fit the description, the age and they are both creepy in a charming yet sickening mysterious way.

If it's one of them I'll be really happy and otherwise I'll hope it's someone who will shock us all, someone off the list.