A man observes a mysterious glass box, South Dakota Police discover a hideous crime and Hawk receives a cryptic message about Special Agent Dale Cooper.
Coop is still trapped as Dougie, going through the motions, as his doppelganger schemes in jail. Meanwhile, new information on Major Garland Briggs turns up.
Cooper and Janey-E are in for a violent surprise at the Lucky 7 office. Meanwhile, Gordon and Albert try enlisting Diane to figure out the mystery of the man they believe to be Cooper in jail.
More about Dougie Jones comes to light after an attempt on his life. Meanwhile, Gordon Cole discovers connections to Cooper concerning a Blue Rose case and Major Garland Briggs.
The set-up involving the Mitchum brothers and Dougie reaches its climax while even stranger things start to happen to both the FBI team and the Twin Peaks Sheriff's Department.