Short answers, pulled from the story.
The body of Laura Palmer was discovered on the 2nd of May 1989 on the bank of a river outside the fictional town of Twin Peaks, Washington. Local logger Pete Martell found the naked corpse wrapped in plastic, which served as the inciting incident for the series.
Leland Palmer was the killer of Laura Palmer while under the influence of the entity Killer Bob. The Giant confirmed that Leland Palmer was Bob's host and the murderer of both Laura Palmer and Maddy Ferguson before Leland committed suicide.
The third season of Twin Peaks, titled Twin Peaks: The Return, was announced on the 6th of October 2014 as a limited series airing on Showtime. David Lynch and Mark Frost wrote all episodes, and the season took place 25 years after the cliffhanger ending of the second season.
Composer Angelo Badalamenti created the score for Twin Peaks in the fall of 1989 alongside director David Lynch. Badalamenti produced the signature Love Theme from Twin Peaks in 20 minutes, and the lyrics for songs like Falling were written by Lynch.
Twin Peaks ended in 1991 due to a combination of declining ratings, network scheduling changes, and the premature resolution of the Laura Palmer murder mystery. ABC placed the show on indefinite hiatus after its 15th episode ranked 85th out of 89 shows, and the series was not renewed for a third season.
David Lynch died in January 2025, making the production of any future episodes or any sort of revival of the series unlikely. Lynch had previously expressed interest in making another season involving the character of Carrie Page before his death.