Donald Trump's niece has penned a tell-all book about her uncle filled with "explosive revelations", according to multiple media outlets.
The Daily Beast reportedly spoke with "people with knowledge of the project" who claimed Mary Trump's book Too Much And Never Enough will detail "harrowing and salacious" revelations about her uncle.
Mary is said to admit to being the primary source into the New York Times investigation into the former Celebrity Apprentice star's allegedly fraudulent tax schemes, having handed over family tax returns and other confidential documents for the Pulitzer Prize-winning article.
Trump, who claims to be a 'self-made millionaire', rejected the report's findings that he inherited over US$413 million from his father's empire, "much of it through tax dodges in the 1990s".
The book will apparently include conversations with Trump's sister, a retired federal judge, containing "intimate and damning" thoughts from the president's sibling about her brother.
According to the Washington Post, Trump claimed last year that a financial feud between him and his late brother Fred Jr's children had been resolved, saying: "We all get along." The upcoming release of Mary's book appears to contradict that statement.