New York, United States:
Donald Trump's niece will publish an unrestricted paper next month that "shines a light on the dark history" of the US President's family, her publisher says.
Mary Trump will release "Too Much and Never Enough: How My Family Made the Most Dangerous Man in the World" on July 28, according to Simon & Schuster.
It is the first time that a member of Trump's family has published flattering stories about the former real estate magnate and reality TV star.
Mary Trump, 55, is the daughter of Fred Trump Jr., the president's older brother, who died in 1981 from the effects of alcoholism at the age of 42.
The 240-page book describes events that she witnessed as a child when she spent time in her grandparents' house in the New York borough of Queens, where her uncle and four siblings grew up.
"It describes a nightmare of trauma, destructive relationships and a tragic combination of neglect and abuse," said Simon & Schuster in a blurb about the book.
Clinical psychologist Mary Trump will say that even though he is his father's favorite son, the president "fired and ridiculed" him when he started suffering from Alzheimer's.
In the book, she explains "how certain events and general family patterns created the damaged man who currently occupies the Oval Office," the publisher said.
It will include "the strange and harmful relationship between Fred Trump and his two oldest sons, Fred Jr. and Donald," the blurb adds. Fred Trump died in 1999.
"She alone can tell this fascinating, annoying saga, not only because of her insider's perspective, but also because she is the only Trump willing to tell the truth about one of the most powerful and dysfunctional families in the world," she concludes .
The book was first revealed on Sunday by the Daily Beast.
The website reported that Mary Trump will reveal that it was the primary source for the New York Times Pulitzer Prize-winning investigation into Donald Trump's finance and taxes.
The investigation found that the president had received more than $ 400 million from his father's real estate empire today, much of it through fraudulent tax systems.
A New York Times spokeswoman declined to comment in the newspaper's own article on the Daily Beast's claim that Mary Trump had provided documents to them.
Several Trump helpers and journalists have written books criticizing the president, but Mary Trumps is the first to be billed by a family insider.
The book will be published a few weeks before the Republican Congress in August when Trump will accept the party's nomination for his reelection offer in November.
(Except for the headline, this story was not edited by NDTV staff and published from a syndicated feed.)