Since the actors who play Brett Partridge and Robert Kirkland are not listed in the cast of the showdown episode 6-7, I think it is safe to assume that their characters are both dead.  Since Sheriff McCallister is included in the cast, my previous assumption that he would be killed in Ep. 6-,4 is incorrect.  The body shown in the prevue for Ep. 6-4 may be someone not on the list of the seven that was revealed by RJ through Lorelei on the dvd.  I believe it is possible that Kirkland kidnaps and tortures PJ because he found out that the list he stole from PJ was fake, and he wants the real list, but I suspect that before he injures PJ too much, RJ will interfere and perhaps kill Kirkland.  RJ wants to keep PJ alive, has rescued him from death before.