History Literature / TwinPeaks

* ContinuitySnarl: Donna and Maddy know each other in this book and have a slumber party with Laura despite the fact the former "meet" in the actual show.

* BelatedBackstory: Douglas Milford was originally just the owner of the Twin Peaks newspaper but actually turns out to be the former head of TheMenInBlack along with a SirSwearsALot advisor to Richard Nixon.

The cult classic television series ''Twin Peaks'' has spawned several successful books due to its popularity. During the show's second season, Pocket Books released three official tie-in books, each authored by the show's creators (or their family) which offer a wealth of backstory. Other books would follow over the years, including two that were also released [[BookEnds before and after]] ''The Return''. Three of these books -- ''The Secret Diary of Laura Palmer'' by Jennifer Lynch, and ''The Secret History of Twin Peaks'' and ''Twin Peaks: The Final Dossier'' by Mark Frost -- have been declared canon by WordOfGod.

* DownerEndinG: Laura Palmer is going to be murdered right after the diary is finished. [[spoiler: It will also help Agent Cooper in his fight against BOB so it may be an EsotericHappyEnding.]]

** Some dates and details about characters are inconsistent and -- in some cases -- even outright impossible when put under scrutiny. Mark Frost has stated that they are all wholly intentional, and has offered an in-universe explanation for them; namely that some were deliberately planted by [[spoiler:Douglas Milford]] to test [[spoiler:Major Briggs]]'s worthiness as a successor to the title of the Archivist. And of course, others again can be explained by [[spoiler:Cooper altering history in ''The Return'', and thereby [[TimeCrash breaking the timeline(s) something fierce]]]].
** Annie Blackburn seems to have been excised from Twin Peaks' history with Norma's maiden name not being Blackburn and a different winner of the Miss Twin Peaks contest. This is contradicted by ''The Return'' and got reconciled in ''The Final Dossier'' - Annie is Norma's half-sister through an affair her father had, and got her last name from her stepfather, Roland Blackburn.

** Norma's mother died with her father when she was a child, which is impossible as her mother showed up in the show during one of Norma's major plots. Also explained in ''The Final Dossier'', her "mother" was in fact her step-mother (well, sort of -- it's rather complicated), and her father hadn't died at the same time as her mother; [[NoLongerWithUs the reference to him being "lost" was in fact referring to him having abandoned his family]].

* NotQuiteTheRightThing: Laura attempts to save her horse (bought for her by Ben Horne) from BOB by setting it free. [[spoiler: RealityEnsues when it starves, loses its shoes, and has to be put down when found.]]

** Sarah Palmer was the girl in ''Part 7'' who had a bug enter her mouth in Los Alamos.

* RippleEffectProofMemory: [[spoiler:Preston notices that people in the area of Twin Peaks apparently can only remember the new timeline that was created by Cooper at the end of ''The Return'', namely that Laura Palmer merely disappeared rather being murdered, something which local newspaper archives also state, even though everyone with knowledge of the case at the FBI still remember that she was originally murdered, which is also supported by FBI's own archives on the case. More disturbingly, when Preston visits Twin Peaks for a couple of days to do research, she notices that her own memory of the her memory and previous knowledge of the Palmer case begins to fade and is slowly replaced with the new version of the events, so [[ScrewThisImOuttaHere she decides to get out of town as quickly as possible]].]]

** Annie Blackburn seems to have been exercised from the book's continuity with Norma's maiden name not being Blackburn and a different winner of the Miss Twin Peaks contest. This is contradicted with ''The Return.'' This, however, gets explained in ''The Final Dossier'', Annie is Norma's half-sister through an affair her father had, and got her last name from her stepfather, Roland Blackburn.

* ContinuitySnarl: Some dates and details about characters are inconsistent and -- in some cases -- even outright impossible when put under scrutiny. Mark Frost has stated that they are all wholly intentional, and has offered an in-universe explanation for them; namely that some are caused by the LiteraryAgentHypothesis at work, while others has been deliberately planted by [[spoiler:Douglas Milford]] to test [[spoiler:Major Briggs]]'s worthiness as a successor to the title of the Archivist. And of course, others again can be explained by [[spoiler:Cooper altering history in ''The Return'', and thereby [[TimeCrash breaking the timeline(s) something fierce]]]].

* BiTheWay: Laura Palmer discovers she's bisexual fairly early in her life and this also makes her uncomfortable with her sexuality.
** Ronette Pulaski, Josie Packard, and Blackie are also revealed to be bisexual as well as Laura's lovers.

* ContinuitySnarl: Some dates and details about characters are inconsistent and -- in some cases -- even outright impossible when put under scrutiny. Mark Frost has stated that they are all wholly intentional, and has offered an in-universe explanation for them; namely that some are caused by the LiteraryAgentHypothesis at work, while others has been deliberately planted by [[spoiler:Douglas Milford]] to test [[spoiler:Major Briggs]]'s worthiness as a successor to the title of the Archivist. And of course, others again can be explained by [[spoiler:Cooper altering history in ''The Return'']].

*** Subverted by Donna Hayward who after living a life of jet set luxury, returned to Twin Peaks and reunited with her father.

A dossier-style novel written by series co-creator Mark Frost, "places the unexplained phenomena that unfolded in Twin Peaks in a layered, wide-ranging history, beginning with the journals of Lewis and Clark and ending with the shocking events that closed the finale." Structured as a secret dossier. Assembled by a mysterious “archivist” and annotated by an FBI agent Tammy Preston, known throughout the book as TP, this enigmatic collection includes undiscovered Lewis and Clark diary entries, UFO sightings, and personal journals of Twin Peaks residents, some of which answer unresolved plotlines from the show's second season. Released October 18, 2016 on Audio & Book format.

* CanonImmigrant: Agent Tammy Preston originated here and eventually shows up in ''The Return.''

* DramaticIrony: Shelly and Bobby are listed as a "happy ending" by Agent Preston, who misses the pair have divorced and their daughter [[spoiler: ends up murdered by her husband.]]

The cult classic television series Twin Peaks has spawned several successful books due to its popularity. During the show's second season, Pocket Books released three official tie-in books, each authored by the show's creators (or their family) which offer a wealth of backstory. Other books would follow over the years, including two that were also released [[BookEnds before and after]] ''The Return''. Three of these books ''The Secret Diary of Laura Palmer'', ''The Secret History of Twin Peaks'', and ''Twin Peaks: The Final Dossier'' by Jennifer Lynch and Mark Frost, respectfully, have been declared canon by WordOfGod.

* CosmicRetcon: Agent Cooper caused Laura Palmer to "disappear" rather than be horribly murdered. It's implied everything else that happened still did, however, making this a DownplayedTrope. [[spoiler:The only overt butterfly effects of this change that Preston mentions that she is able to identify during her investigation is that Leland, instead of dying in police custody, ends up committing suicide one year to the day of Laura's disappearance. Per WordOfGod, another result of the altered timeline is that Maddy Ferguson is "[[https://www.reddit.com/r/twinpeaks/comments/7bn45h/im_mark_frost_cocreator_of_twin_peaks_and_author/dpjbhy1/?context=3 almost certainly still alive]]."]]

* AbusiveParents: Vivian Blackburn is given a AdaptationalVillainy upgrade that moves her from just being a cruel and dismissive woman to an outright monster to both her daughter as well as her husband's daughter. Annie Blackburn's father turns out to be even worse as he sexually assaulted her as a teenager.

** Norma's mother died with her father when she was a child, which is impossible as her mother showed up in the show during one of Norma's major plots. Also explained in ''The Final Dossier'', her "mother" was in fact her step-mother (well, sort of -- it's rather complicated), and her father hadn't died at the same time as her mother; the reference to him being "lost" was in fact referring to him having abandoned his family.

* CosmicRetcon: Agent Cooper caused Laura Palmer to "disappear" rather than be horribly murdered. It's implied everything else that happened still did, however, making this a DownplayedTrope. [[spoiler:The only overt butterfly effects of this change that Preston mentions that she is to identify during her investigation is that Leland, instead of dying in police custody, ends up committing suicide one year to the day of Laura's disappearance. Per WordOfGod, another result of the altered timeline is that Maddy Ferguson is "[[https://www.reddit.com/r/twinpeaks/comments/7bn45h/im_mark_frost_cocreator_of_twin_peaks_and_author/dpjbhy1/?context=3 almost certainly still alive]]."]]

* TheCobbersChildrenHaveNoShoes: Doctor Jacoby admits he was a complete failure as a psychologist in failing to notice Laura Palmer's extremely obvious signs of sexual abuse. It costs him his license to practice in Washington State (along with his NewAge beliefs).