While Mark Frost himself has remained tight-lipped about the plot of his upcoming novel "The Secret History of Twin Peaks," his French publisher has revealed some potentially substantial details in its marketing copy -- or the most substantial to date, anyway.

A translated blurb describes a female FBI agent analyzing the contents of a mysterious box of unknown provenance, with the most interesting item being a huge dossier on "everything related to the strange town of Twin Peaks," according to the Welcome to Twin Peaks fan site.

"She also has to determine the identity of the person who compiled the dossier," the blurb continues. "Along the way, she discovers secrets about the lives of the town’s residents, but also investigative reports from Dale Cooper who has since vanished, newspaper clippings, an autopsy report, and other classified information."

Although Flat Iron Books, "Secret History's" English language publisher, clarified to io9 that the novel is not a tie-in to the Showtime revival of "Twin Peaks" debuting next year, if Dale Cooper has been missing for a prolonged period of time this could certainly affect the plot of the new series. The identities of the female FBI agent and the archivist could be significant, as well, if they are among the 200-plus famous faces joining the new series.

"The Secret History of Twin Peaks" by Mark Frost will be published October 18. The new "Twin Peaks" series co-written by Frost and David Lynch and directed by Lynch will air on Showtime in 2017, barring catastrophe.