Are any of the following books familiar?
In the third case, author Margaret Seltzer (writing as Jones) executed an elaborate hoax, proving bogus materials, photos, letters and "siblings" to the publisher's fact checkers. On 5 March 2008 the Los Angeles Times said "No nonfiction publisher can afford serious fact-checking anymore; most do none at all." They also note that a simple novel (fiction) does not attract anywhere near the publicity and promotion that such a "memoir" will. The economics of the business provide a motivation for fakery.For more, read the Smithsonian magazine article about the first three.