We’re still two weeks away from the pub date of a new book by the current or former senior White House official known as Anonymous, but the fireworks have already begun. On Monday, the Department of Justice fired off a letter to the author’s agents and publisher, advising them that “publication of the book may violate that official’s legal obligations under one or more nondisclosure agreements.” The response to the DOJ was, more or less: Take a hike. Now, everyone’s waiting to see if the government will turn up the heat, which would be a moot point: Shipments are already en route to bookstores, so the genie’s not going back in the bottle. Journalists, meanwhile, are no doubt pulling out all the usual tricks to try to get their hands on the soon-to-be best seller, A Warning, which hits shelves on November 19 via Hachette’s Twelve imprint. As the thinking goes, it’s not a matter of if the book will leak prematurely—it’s a matter of when.

Until then, the chattering classes will just have to settle for the familiar parlor games about what sort of shocking new revelations A Warning will contain, and whether they will even be damaging to a president who still packs arenas full of believers even as the case against his fitness seems to metastasize by the day. The book is the latest in a series of sensational White House tell-alls chronicling the stomach-churning, can’t-make-this-stuff-up inner workings of the Trump administration, which in turn tends to dismiss such works as fabulist takedowns driven by ax-grinding anonymous sources. A Warning is, of course, the first such tell-all in which it ain’t just the sources who are anonymous. The author is the same unidentified person who wrote last year’s explosive New York Times op-ed describing “many of the senior officials in [Trump’s] own administration…working diligently from within to frustrate parts of his agenda and his worst inclinations.” The author, who did not take an advance and plans to donate a substantial portion of the royalties to First Amendment organizations and other nonprofits, has faced criticism for maintaining their veil even as a slew of officials have been marching down to Capitol Hill to testify about Trump’s Ukraine dealings in the House impeachment inquiry.

The original, 965-word op-ed, “I Am Part of the Resistance Inside the Trump Administration,” dropped a number of bread crumbs, most notably the one about “early whispers within the cabinet of invoking the 25th Amendment.” Now the author has been given 272 pages in which to elaborate on all of that, including specific meetings, discussions, and quotations from Trump himself. I’m told A Warning will include, for instance, more detail about the 25th Amendment conversations, Trump’s decision-making on matters like national security and intelligence, and the administration’s “attacks on Democratic institutions.” The book will expose “bizarre ideas, misconduct, and illegality—fresh angles to pursue for people who want to look into the administration,” said someone familiar with what’s in it.

As the New York Times reported on Friday, the book’s publisher and agents—D.C. power duo Matt Latimer and Keith Urbahn of Javelin—have gone to elaborate lengths to protect the author’s anonymity. (Burner phones, clandestine tête-à-têtes, closed Wi-Fi systems, etc.) There was a specific concern about foreign intelligence services—namely those of Israel, Russia, or China—unmasking the author, according to the person familiar with the book.

Prior to their introduction to Anonymous earlier this year, Latimer and Urbahn had their own theories about who it might be. After the op-ed was published, they approached suspects one by one, and they chased additional leads about the author’s identity gleaned from contacts in the administration and the press. If someone offered a compelling tip that it might be so-and-so, they emailed so-and-so, casually asking if that person might be interested in doing a book at some point. If so-and-so was, in fact, Anonymous, then the door would be open. The agents, who have sold big-ticket books by former government officials like James Comey, John Bolton, and Cliff Sims, were basically shaking the trees, and eventually, the apple fell into their laps. In late spring, they got an invitation for a secretive meeting with someone described as a senior administration official, who told them, “I am Anonymous.”