Episode 16 (Twin Peaks)

The small town of Twin Peaks, Washington, has been shocked by the murder of schoolgirl Laura Palmer (Sheryl Lee) and the attempted murder of her friend Ronette Pulaski (Phoebe Augustine). Federal Bureau of Investigation (FBI) Special Agent Dale Cooper (Kyle MacLachlan) has been sent to the town to investigate,[4] and has come to the realization that the killer was possessed by a demonic entity—Killer BOB (Frank Silva).[5] BOB's real human host, Laura's father Leland Palmer (Ray Wise), has murdered his niece Madeleine "Maddy" Ferguson (Lee) and disposed of her body.[6]

Meanwhile, Ben Horne (Richard Beymer) is still imprisoned under suspicion of Laura Palmer's murder, Lucy Moran (Kimmy Robertson) confronts Deputy Andy Brennan (Harry Goaz) and Dick Tremayne (Ian Buchanan) about her pregnancy, and Norma Jennings (Peggy Lipton) is surprised when her mother, Vivian Smythe Niles (Jane Greer) arrives in Twin Peaks with her new husband, Ernie (James Booth).

Cooper, FBI Special Agent Albert Rosenfield (Miguel Ferrer), Sheriff Harry S. Truman (Michael Ontkean) and Deputy Hawk walk through the woods outside of Twin Peaks the morning after the discovery of Maddy Ferguson's body. Albert gives forensic evidence to Cooper, concluding Maddy's killer was the same person who murdered her cousin, Laura Palmer. Sheriff Truman insists on contacting Maddy's uncle Leland Palmer, as he would be able to contact her parents. Cooper persuades Sheriff Truman to give him twenty four hours "to finish this."[7]

In the Double R Diner, Deputy Andy Brennan sits at the counter reciting the phrase "J'ai une âme solitaire"—French for "I am a lonely soul."[7] Donna Hayward (Lara Flynn Boyle) approaches Andy and asks if he had visited Mrs. Tremond (Frances Bay), whose grandson had said the same phrase to her during her Meals on Wheels round. Andy reveals that the phrase was included in Harold Smith (Lenny Von Dohlen)'s suicide note. Donna contacts Cooper and both of them visit Mrs. Tremond's home, only to find a completely different, much younger woman living there answering to the name of Mrs Tremond. She gives Donna an envelope from Harold Smith, containing two pages from Laura Palmer's secret diary. The entries—dated February 22 and 23 — reveal that Cooper and Laura had the same dream involving the Red Room and that Laura was aware of her imminent death. Cooper visits MIKE (Al Strobel), who is inhabiting Philip Gerard, at the Great Northern Hotel. Cooper tells MIKE that he and Laura had the same dream on separate occasions and he needs to unlock the answers. MIKE mentions a "golden circle" and his connection with The Giant (Carel Struycken), telling Cooper he must summon The Giant to receive answers. Upon leaving MIKE's room, Cooper encounters the Waiter (Hank Worden), who tells him he's "getting warmer now."[7]

Elsewhere, James Hurley (James Marshall) gives Donna a ring, Norma Jennings (Peggy Lipton) has an altercation with her mother, Vivian Smythe Niles (Jane Greer), in the Double R Diner, and Lucy Moran tells Andy Brennan and Richard Tremayne about her plans for a blood test to determine which of them is the father of her baby. Mr. Tojamura visits Ben Horne (Richard Beymer) in jail, where it is revealed Tojamura is Catherine Martell (Piper Laurie). Ben signs the Ghostwood Project contract over to Catherine in exchange for an alibi in the murder case.

Meanwhile, Donna visits Leland Palmer to deliver a tape of a song she, James and Maddy recorded together. Leland, while inhabited by BOB, asks Donna to dance with him and becomes aggressive, before being distracted by a knock on the door from Sheriff Truman. He informs Leland there has been another murder and asks him to come to the Roadhouse. At the Roadhouse, Cooper assembles all of the people he suspects might be BOB's host. While there, the Waiter offers people sticks of gum and tells Leland "that gum you like is going to come back in style", prompting Cooper to remember his earlier dream of the Red Room. He determines that Leland is BOB's host but arrests Ben Horne. While Ben is about to be imprisoned again, Cooper and Sheriff Truman throw Leland into the interrogation room, where he goes into a manic fit.

Inside the interrogation room, BOB confesses—through Leland's body—that he murdered Theresa Banks, Laura Palmer and Maddy Ferguson. When Cooper, Albert, Sheriff Truman and Hawk leave, BOB chants a poem ending with the phrase "fire, walk with me."[7] The water sprinklers turn on and BOB forces Leland to commit suicide by ramming his head into a steel door. BOB vacates Leland's body and Leland, in his dying moments, reveals the nature of his possession. Cooper comforts Leland through his last moments and Leland dies after seeing a vision of Laura.

Cooper, Albert, Sheriff Truman and Major Garland Briggs (Don S. Davis) walk through the woods outside of Twin Peaks discussing Leland's possession and death. Albert concludes that BOB is just "the evil that men do"[7] and Sheriff Truman questions where BOB might have gone to. An unseen character then runs through the woods and an owl flies out from a large white light.