SPOILER WARNING ;)
Very interesting facts about the upcoming season:
Jack Plotnick (as Bret Partridge) returns in Season 6, Episode 1 (The Desert Rose)
Drew Powell (as Reede Smith) returns in Season 6, Episode 2 (Red-Winged Blackbird)
Xander Berkeley (as Sheriff McAlister) returns in Season 6, Episode 3 (Wedding in Red)
The Hunt for Red John begins :))
How do you find this theory?
plausible
unlikely