Donna, after discovering that Harold has Laura's secret diary, hatches a risky plan with Maddy to steal it from his home. Andy gets some good news about his condition. Cooper and Truman raid One-Eyed Jack's.
Cooper's near-deaf FBI supervisor Gordon Cole arrives with an ominous message from Windom Earle. Cooper contacts Mike through the possessed Phillip Gerard. Josie is pressured. Shelly and Bobby host a welcome home party for Leo.
Maddy prepares to leave Twin Peaks, Leo wants shoes, Norma learns of Nadine's regression, Tojamura reveals his identity to Pete, and Cooper arrests Ben Horne for the murder of Laura Palmer only to receive a devastating message.
Ben gets a visit from his lawyer, Jerry. Lucy's meddling sister visits her. Norma's judgy mother arrives in Twin Peaks with a shady new husband. Both Bobby and Catherine plan to blackmail Ben. BOB covers his tracks but Mike is after him.
After the discovery of Maddy's corpse, Cooper attempts to finally identify Laura's real killer using his visions as clues. The Bookhouse Boys and Major Briggs help out. Lucy tries to decide who the father of her baby is.
Major Briggs is missing. Agents Denise Bryson and Roger Hardy investigate Cooper's activities at One-Eyed Jack's. Sheriff Truman stands up for him. Cooper learns about the legend of the Black and White Lodges from Hawk.
Cooper visits Dead Dog Farm. Thanks to Audrey, he also finds a clue that could help him clear his name. Nadine gets on the wrestling team to seduce Mike, while Dick Tremayne and Andy confront concerns over little Nicky's shady past.
Major Briggs reappears with a strange symbol on his neck and a shocking story to tell. Unhinged, Ben Horne re-enacts the Civil War. Hank faces Ed. Leo makes a move. Denise, Agent Cooper and Sheriff Truman arrange a trap for Jean Renault.
Cooper reveals why Windom Earle is so obsessed with him and chess. Leo escapes. James is set up. Dougie Milford's brother faces his widow. Andrew Packard is back. Little Nicky's past is explained. Audrey strikes a deal with Bobby.
While Cooper and Earle plot their next moves, Josie is forced to meet with Thomas Eckhardt, which leads to a shocking and ambiguous twist. Hank is busted for shooting Leo, Ed and Norma plan to finally get married and James leaves town.
Coop falls for Norma's sister and new waitress, the cute, reclusive ex-nun, Annie. Truman grieves over Josie's unexplained death. Earle visits Donna. Ben's fashion show set up to promote his "Save the Pine Weasel" cause ends in disaster.
Truman is shaken out of his stupor by a bizarre attempt on his life. Shelly has a miraculous effect on Gordon Cole. Cooper and the officers explore the mystical Owl Cave. Donna learns of her mother and Ben Horne's secret history.
Cooper and Major Briggs try to unlock the secret of Owl Cave. Windom Earle is ahead of them and makes his next move. Gordon Cole says goodbye to Shelly. Dale takes Annie out on a date. The Miss Twin Peaks contest draws hot competition.
As romance blooms for Cooper and Annie, strange ominous things start to occur all over town. Earle kidnaps Major Briggs to find the way to the Black Lodge. Donna finds her birth certificate. Audrey's crush, John Justice Wheeler, is leaving town.
Leo commits a selfless act, risking his own life. Earle begins his endgame. Donna discovers her family's secret. Failing to decipher the map to the Black Lodge, Cooper and Truman rush to try and protect the life of Miss Twin Peaks.