A successful New York apparel executive, he switched gears in midlife and became a novelist, writing numerous best sellers, including five with James Patterson.
She profiled Vivien Leigh, Katharine Hepburn, Judy Garland, Barbra Streisand and Ronald Reagan. She also profiled herself, in two memoirs and an autobiography.
He demonstrated that fascism had its own intellectual roots and showed how ideas, theories and an antisemitic “ethos” influenced German culture and policymaking.
A prolific journalist and author, he ignited an uproar with a less-than-flattering portrait of Charles and Diana’s marriage. “The most reviled man in Britain,” one newspaper called him.