"Part 8", also known as "Gotta Light?", is the eighth episode of the third season of the American surrealist mystery-horror drama television series Twin Peaks. It was written by series creators Mark Frost and David Lynch, directed by Lynch, and stars Kyle MacLachlan. "Part 8" was first broadcast on June 25, 2017, on Showtime, and was watched by an audience of 246,000 viewers in the United States. The episode is composed of lengthy, surreal scenes, with very little dialogue throughout, and was largely shot in black and white. Critics and audiences overwhelmingly praised the episode for its visuals, sound design, tone, and thematic depth, but some viewers found the narrative's abstract nature confusing and lacking in coherence.

Gotta light?

— Woodsman (used as a promotional tagline for the episode)

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). FBI special agent Dale Cooper (Kyle MacLachlan) has been sent to the town to investigate and has discovered that the killer was Laura's father, Leland Palmer (Ray Wise), who acted while possessed by a demonic entity—Killer BOB (Frank Silva). At the end of the original series, Cooper was trapped in the Black Lodge, an extra-dimensional place, by BOB, who let out Cooper's doppelgänger to use him as his physical access to the world. Twenty-five years after those events, Cooper manages to escape the Lodge through a portal between worlds; during this process, he was supposed to replace the doppelgänger, but instead he takes the place of a second doppelgänger (known as Dougie Jones), fabricated by the first as a patsy for the exchange. Cooper's doppelgänger, exhausted from the process, crashes his car and passes out, allowing the police to capture him; at the station, he uses the information in his possession to blackmail Warden Murphy (James Morrison) into releasing him and his partner, Ray Monroe (George Griffith).

Monroe and Cooper's doppelgänger are traveling in a car Murphy prepared for their escape. Using his phone, the doppelgänger spots several trackers on the car, which he sends to a nearby truck to confuse the wardens. When the doppelgänger asks him whether he wants to go to "the farm", Ray responds affirmatively; when asked about Darya's fate, the doppelgänger lies and tells Ray that she's still alive, awaiting their call. On their way through, Ray stops to urinate; the doppelgänger uses this occasion to attempt to extort the information he was seeking from him, and, when he refuses to cooperate, tries to kill him, but the gun provided by Warden Murphy has had the firing pin removed and does not work.

Ray then shoots the doppelgänger twice, but as he is preparing to deliver his final hit, ghostly men (the "woodsmen") appear and begin to tear at the doppelgänger's body, revealing an orb that emerges from his wound with Killer BOB's grinning face within. Other ghostly figures run circles around Ray in a ritualistic manner, prompting Ray to flee, terrified; on his drive away, he sends Phillip Jeffries a message that the doppelgänger may have survived the attack. In the Roadhouse, an MC (JR Starr) introduces "the" Nine Inch Nails; the group performs their song "She's Gone Away". Later, the doppelgänger awakens where he lay, seemingly fully restored.

In 1945 New Mexico, the first atomic bomb is detonated. Woodsmen circle around and inside a building labeled "convenience store" that appears burnt out. Floating in a void, the Experiment (Erica Eynon), a white humanoid form, spews a stream of primordial/ectoplasmic fluid; among various ova in the fluid one darker globule has BOB's visage. Red and gold imagery follows like burning embers, a fireworks radiation of atomic energy. In an imposing windowless building atop a craggy outcrop amid a purple sea, Señorita Dido (Joy Nash) sits next to a metallic-bell shaped machine, listening to a phonograph. When the machine begins to buzz loudly, the Fireman (Carel Struycken) enters, inspects the machine, switches the siren off, then moves upstairs to a room like a small vintage movie theatre with a film projector. The Fireman watches as images from the detonation, the convenience store, and the Experiment sprouting BOB play on the screen. He then begins to levitate, light and tendrils of energy emanating from his head like a forming galaxy, as stars are projected onscreen. Señorita Dido enters, and the Fireman emits a golden crystal/light orb containing Laura Palmer's face; the orb floats down to her. After kissing the orb, she sends it to Earth (which appears on the screen) through a golden tube contraption emanating from the whirring luminaire ceiling.

In 1956 New Mexico, an unearthly amphibi-insectoid creature hatches from an egg on the bomb's explosion site and crawls through the desert. A boy (Xolo Maridueña) and a girl (Tikaeni Faircrest) pass a gas station as he walks her home from a date; the girl finds a face-up penny and contemplates the good luck it might bring. Two woodsmen manifest and descend on a rural road, stopping a couple's (Tad Griffith and Leslie Berger) car. One woodsman (Robert Broski), cigarette in hand, repeatedly asks them, "Got a light?", which prompts them to flee, terrified. Meanwhile, the young couple reaches the girl's home; they share a brief first kiss before she walks in and he departs elated. The Woodsman enters a radio station. He asks the receptionist (Tracy Phillips) for a "light", then crushes her skull, killing her instantly; overpowering the disc jockey (Cullen Douglas) and dislodging The Platters single "My Prayer", he repeatedly broadcasts the words: "This is the water and this is the well. Drink full and descend. The horse is the white of the eyes and dark within." During the broadcast, numerous listeners fall unconscious, including the young girl, through whose room's open window the creature enters and climbs down her throat. The woodsman kills the disc jockey with another one-handed skull crush and leaves. As he walks into the desert, the neighing of a horse can be heard.