The Weinstein company is trying to keep secret any details about the new JD Salinger documentary and book about the author's life until the film's release on Sept. 6.

The effort has been titled the "Uncover The Mystery But Don't Spoil The Secrets" campaign.

"Because of the revelatory and confidential nature of the documentary and book, Salerno, TWC and Simon & Schuster are encouraging audiences and industry insiders who see the film and read the book to remain tight-lipped on the secrets they unveil and give others a chance to experience them for themselves," the Weinstein Company said in a statement.

The film, which attempts to capture and humanize the mystical persona of the elusive author, took about nine years to make.

Director and writer Shane Salerno (Armageddon, Savages) worked with code names, hidden identities and surveillance cameras while researching Salinger's life for this documentary and book. The production of the film was kept top secret through this period.

"It was run like a CIA operation. Everything was compartmentalized, top secret and on a need-to-know basis. It was really intense," co-producer Jeffrey Doe told The Associated Press about the making of the film.

In the nine years, Salerno managed to conduct more than 100 interviews with Salinger's friends, war buddies and fans. The film also features interviews with the likes of Philip Seymour Hoffman and Ed Norton, who are great fans of Salinger. A biography about Salinger will be accompanying documentary and will hit shelves Sept. 3.

The Catcher In the Rye novelist died in 2010 at his New Hampshire home at the age of 91. Very few people knew about his life and what he was up to at the time. The film is due out in less than three weeks and little is known about the production that draws upon more than 100 interviews. The film also promises to reveal a trove of documents and rare photographs leading to many revelations about an author who still fascinates millions.

Watch the teaser of the film here: