This article contains spoilers from The Secret History of Twin Peaks and the 2017 series of Twin Peaks. If are not up-to-date with the aforementioned book and/or television program, it is strongly recommended that you do not read this article.

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Federal Bureau of Investigation Special Agent Tamara "Tammy" Preston or TP is an agent who, under the orders of Deputy Director Gordon Cole was assigned to discover the identity of an archivist who compiled a dossier on the history of the town of Twin Peaks, Washington.


Re-emergence of Agent CooperEdit

In 2014, Preston presented crime scene photos of the deaths of Sam Colby and Tracey Barberato to Deputy Director Gordon Cole and Agent Albert Rosenfield. One of the photos included a figure recorded within a glass box in the room just prior to the deaths of Colby and Barberato. They then left hurriedly after receiving a notification about a call concerning missing Special Agent Dale Cooper.[2]

Preston accompanied Cole and Rosenfield to a federal prison in South Dakota, where Cooper was being held. During an interview, Cooper claimed to have been working undercover with missing agent Phillip Jeffries and had been on his way to debrief with Cole when he had his car accident that led to his incarceration. After this interview, Cole and Rosenfield dismissed Preston to speak privately, since she was wearing a wire.[1]

She later examined Cooper's file and compared his fingerprints from before his 1989 disappearance and from his booking at the federal prison. Troubled, she quickly left her desk.[3] On a flight to South Dakota with Albert, Gordon, and Cooper's former secretary Diane, Tammy presented her findings, revealing that though the fingerprints are identical, someone at the prison had to reverse the images to get a match, meaning the man at the prison's fingerprints are the exact opposite of Agent Cooper's. Gordon praised her work and gave her a hint as to what direction he speculated the investigation was going in.[4]

Later, while escorting Diane to meet with Cooper, she expressed the FBI's gratitude at her cooperation, only to get cursed out by Diane.[4]


In 2016, Agent Preston was given by Deputy Director Cole a dossier concerning the town of Twin Peaks, with the assignment to discover the identity of the person who compiled it. In addition, she was given access to all of Special Agent Dale Cooper's files from his 1989 investigation of the murder of Laura Palmer, as Cole found that they may help her identify the Archivist.[5]

After going through and annotating the dossier, she discovered that the Archivist was Major Garland Briggs of the United States Air Force, who was continuing the work of his predecessor, Lieutenant Colonel Douglas Milford. The dossier ended with a 'MAY DAY' message from Briggs on March 28, 1989. However, files on what happened to Briggs and Cooper were on a higher clearance level than she was allowed, so she turned over the dossier with her findings to the Director's office and awaited further orders.[5]

Personality Edit

Preston shares many of the same investigative skills and quirks characteristic of other agents who previously worked directly under Cole, such as Chester Desmond and Dale Cooper, including a penchant for identifying the smallest details and a love of coffee. Her notes while annotating the dossier characterize her as highly skeptical, often using her notes to refute some of the more fantastical elements of the dossier and suggesting alternative explanations. As she reads through the dossier, she becomes increasingly intrigued by all the connections the Archivist makes, and grasps at reasonable explanations. She appears to hold Gordon Cole in high regard, and is left conflicted by his apparent connection to several of the mysterious events described in the dossier.

Preston gets carsick, and on the ride to the prison in South Dakota she was seen with her head leaning out the open window, puzzling her boss.

Behind the scenesEdit

The Secret History of Twin Peaks by Mark Frost01:54

The Secret History of Twin Peaks by Mark Frost

An uncredited actress's hands can be seen in the book's trailer, intended to be Preston's.

In the audiobook release of The Secret History of Twin Peaks, Preston's notes were read by actress Annie Wersching.

She is played by musician Chrysta Bell in the 2017 series. Her appearance was done by Nancy Steiner based on Lynch's vision of the character, it being a retro look for the undershirts and tops.[6]


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