It turns out Twin Peaks is not like other towns, and soon FBI Agent Cooper becomes enmeshed with its quirky and mysterious residents.
The small northwest town of Twin Peaks, Washington is shaken up when the body of the Homecoming Queen, Laura Palmer, is discovered washed up on a riverbank, wrapped in plastic. FBI Special Agent Dale Cooper is called in when Ronnette Pulaski, who attended the same high school as Laura, is found wandering on a bridge before lapsing into a coma. Cooper believes there is a connection between Laura's death and the death of another girl named Theresa Banks that happened a year earlier. Cooper discovers a small piece of paper with the letter "R" on it shoved under Laura's fingernail. He reveals to Sheriff Truman that under the nail of Teresa Banks he found a "T." There's little doubt the same killer has stuck again. Meanwhile, the rebellious Audrey Horne ruins a business deal for her father Benjamin; Twin Peaks sheriff Harry S. Truman arrests Laura's boyfriend Bobby, who is secretly seeing a married woman named Shelly; Laura's best friend Donna and secret boyfriend James discover a mutu
Agent Cooper enjoys the comforts of the Great Northern Hotel; Bobby Briggs and Mike Nelson are released from jail; Doctor Hayward hands over the autopsy report on Laura Palmer; Cooper and Truman interview Josie Packard; Audrey Horne and Donna Hayward vow to solve Laura's murder; Sarah Palmer has a vision of a grey-haird man; Doctor Jacoby conceals important information.
Ben Horne's brother, Jerry, arrives in Twin Peaks; James and Donna decide to be together; Ben & Jerry travel to One Eyed Jacks and meet with its madam, Blackie O'Rielly; Audrey leaves a clue for Cooper; Deputy Hawk finds a bloody towel near the crime scene; Cooper demonstrates a unique deductive technique; The cynical Special Agent Albert Rosenfield arrives to examine the body of Laura Palmer; Josie discovers Catherine has been keeping two ledgers; Leo takes his anger out on Shelly; Agent Cooper has a mysterious dream about the crime.
The next morning, Cooper meets with Audrey, who confesses to leaving him the note about One Eyed Jack's. Cooper tells Truman he can't remember who the killer was in his dream, but insists the dream is a code to solving the crime. Albert, after offending everyone in town, is forced to end his autopsy early. Albert and Truman come to blows. Bobby, James and Leland all make a scene at Laura's funeral. Laura's identical cousin, Maddy, arrives in town. Norma's husband, Hank Jennings, is up for parole. Cooper has suspicions about Dr. Jacoby. Leland shows signs of cracking.
Cooper questions Dr. Jacoby, who suspects Leo Johnson is the killer. Cooper's supervisior, Gordon Cole, calls in with Albert's report. Josie Packard spies on Ben Horne and Catherine Martell. Hawk tracks down the One Armed Man. Mrs. Palmer shares her vision of the killer, the same man Cooper saw in his dream (BOB). Truman and Cooper find the bird who attacked Laura belonged to Leo's friend, Jacques Renault. Hank Jennings has his parole hearing and makes a threatening phone call to Josie.
Cooper and company have tea with the Log Lady. The Log Lady tells them there was a third man following after Leo and Jaques the night Laura died. At the cabin of Jaquces Renault, Cooper, Hawk and Truman find Waldo the bird. The bird not only attacked Laura the night she died, but he can also talk. Cooper finds a poker chip from One Eyed Jacks. Hank returns home to Norma. The Briggs family visits Dr. Jacoby. Audrey takes a job at the perfume counter where Laura and Ronette worked. Shelly takes her revenge on Leo. Audrey has a surprise for Agent Cooper.
Audrey cons her way into working at the perfume counter where Laura worked. She discovers that it's being used as a recruitment post for One Eyed Jack's. James, Donna and Maddy plan to lure Jacoby away from his office. Cooper and Big Ed go under cover at One Eyed Jack's. Nadine's drape runners are rejected. Truman asks for Cooper's help regarding Josie's fears about the Mill. Leo sets his sights on Bobby Briggs and Waldo the Bird. Bobby sets up James Hurley. Ben and Josie decide to double cross Catherine.
Audrey is hired at One Eyed Jack's, but is caught in a trap when her father arrives. Cooper gets Jacques Renault to reveal the details of Laura's last night in the cabin. Deputy Andy saves Truman's life and apprehends Renault. Lucy has a surprise for Andy. Dr. Jacoby is attacked in the park. James, Donna and Maddy find Laura's last tape and retrieve the necklace. Cooper finds the coke planted in James's bike. Leo traps Shelly in the mill and sets it on fire. Hank lures Catherine to the burning mill, then goes after Leo. Nadine overdoses on sleeping pills. Leland Palmer takes revenge. Cooper, arriving back at the Great Northern Hotel, is shot three times. To Be Continued...