Robert Kirkland. In Behind The Red Curtain, the 18th episode of the 5th season, Lennon was killed by Robert Kirkland who injected him with a syringe containing air that caused air embolus that made his heart give out.
Sheriff is RJ
Michael Kirkland as the new red jhon
remember 1x01 the smile no is the real RJ
Bob Kirkland kill Lennon was complicit in RJ ?
http://www.youtube.com/watch?v=11jDYrfH-l0
How do you find this theory?
plausible
unlikely