Hadleigh has an M.S. in Mass Communications and has traveled to more than 60 countries. As of 2015 he has published 19 books and has written for more than 100 magazines in the U.S. and abroad, including TV Guide, Playboy, and Us Weekly. He won $16,400 as a contestant on the March 20, 1998 episode of the game show Jeopardy! He lives in Beverly Hills, California and Sydney, New South Wales. Hadleigh's books have been translated into 14 languages, and several of them have been made into television specials and documentaries in the U.S., U.K., and elsewhere.
Several of his books deal with pop culture and/or entertainment history, and how the media and status quo shape and manipulate audiences' perceptions and opinions. Six of his books are exclusively about the LGBT presence in and contributions to entertainment; Hadleigh himself is gay. Some of Hadleigh's books are quotes collections, some are histories and overviews, and some are interview books with movie personalities. Several of these interviews, as with Rock Hudson, were published in periodicals before the subjects died. The author had committed himself not to out any of his subjects against their will, at least as long as they were living. Some interviewees agreed to speak only on condition that the published result be posthumous. Nearly all the interviews were recorded; a few individuals, like director Rainer Werner Fassbinder and Mae West, however, refused to speak if they were recorded—which was their policy with other interviewers as well.
Hadleigh's second book, Conversations With My Elders (republished as Celluloid Gaze) includes interviews with actors Sal Mineo and Rock Hudson; directors George Cukor, Luchino Visconti, Fassbinder, and designer, photographer/author Cecil Beaton. Their conversations with the author reveal much about the lives and careers of these celebrities and how their homosexuality affected both.
Hollywood Gays is a collection of interviews with prominent film personalities, such as Liberace, Anthony Perkins, Randolph Scott, and several others, most of them widely known as homosexual. Publishers Weekly said about the book: Hadleigh (is) evidently taking up where the great gossip columnists of yesteryear left off. The book includes an interview with producer David Lewis, who talks freely about his longtime companion James Whale, as well as a conversation with William Haines, whose career was destroyed by Louis B. Mayer after Haines refused to marry a woman, and was later caught with another man in his cot at a YMCA.
Hollywood Lesbians is a collection of interviews with ten lesbians in the entertainment industry. Publishers Weekly wrote: "Fans of Hollywood's golden age will find this collection of interviews conducted over many years revealing, though hampered. The subjects - director Dorothy Arzner, designer Edith Head, actresses Judith Anderson, Marjorie Main, Barbara Stanwyck, Nancy Kulp, Capucine, Patsy Kelly, Agnes Moorehead and Sandy Dennis — were raised in a generation terrified of voicing support for fellow homosexuals, let alone daring to come out of the closet to acknowledge their own sexuality... Still, with carefully couched questions from Hadleigh (Conversations With My Elders), though some of the respondents dance around the subjects of sex and sexuality. Still, an enlightening picture emerges of Tinseltown, different from that presented in the fanzines."
- In or Out: Stars on Sexuality is a compilation of celebrity quotes from stars who are homosexual, bisexual or heterosexual, and who comment on themselves, their sexuality, on others, on the closet, and on society's homophobia, as well as that of showbiz, Hollywood in particular.
- The Lavender Screen: The Gay and Lesbian Films — Their Stars, Makers, Characters, and Critics is an illustrated overview of LGBT-themed films, most of them starring heterosexual in the lead gay, lesbian or bisexual roles, such as Robin Williams in The Birdcage. It was updated and re-released in 2001.
- The Vinyl Closet: Gays and Lesbians in the Music World focuses on present and past gay, lesbian and bisexual singers, composers, musicians and dancers in North America and Britain, with a foreword by Leonard Bernstein, and is one of the first books that document their artistic contributions. According to Madonna, it "cuts through the role-playing crap and shows the music world as it really ... is! It's camp with a High-C!"
- In or Out: Gay and Straight Celebrities Talk About Themselves and Each Other is a collection of quotes that sheds a spotlight on relationships and sexual orientations of the show business industry.
- Hadleigh, Boze (1981). The Films of Jane Fonda. ISBN 080-650-7543.
- Hadleigh, Boze (1986). Conversations with My Elders. ISBN 031-200-1150. (also published as Celluloid Gaze)
- Hadleigh, Boze (1990). Hispanic Hollywood. ISBN 080-651-1850.
- Hadleigh, Boze (1991). The Vinyl Closet:Gays and Lesbians in the Music World. ISBN 096-234-9798. (also published as Sing Out!)
- Hadleigh, Boze (1992). Leading Ladies. ISBN 086-051-8086. (UK only)
- Hadleigh, Boze (1993). The Lavender Screen. ISBN 080-651-3411.
- Hadleigh, Boze (1994). Hollywood Babble On. ISBN 155-972-2193.
- Hadleigh, Boze (1994). Hollywood Lesbians. ISBN 156-980-0146.
- Hadleigh, Boze (1996). Hollywood Gays. ISBN 156-980-0839.
- Hadleigh, Boze (1996). Bette Davis Speaks. ISBN 156-980-0669.
- Hadleigh, Boze (1998). Hollywood and Whine. ISBN 155-972-4730. (published in the UK as Hollywood Bitch)
- Hadleigh, Boze (1999). Celebrity Feuds!. ISBN 087-833-2448.
- Hadleigh, Boze (2000). In or Out. ISBN 978-1569801567.
- Hadleigh, Boze (2003). Celebrity Lies!. ISBN 156-980-2459.
- Hadleigh, Boze (2003). Holy Matrimony!. ISBN 074-073-3257.
- Hadleigh, Boze (2005). Celebrity Diss and Tell. ISBN 978-074-075-4739.
- Hadleigh, Boze (2007). Mexico’s Most Wanted. ISBN 978-159-797-1492.
- Hadleigh, Boze (2007). Broadway Babylon. ISBN 978-082-308-8300.
- Hadleigh, Boze (2014). An Actor Succeeds. ISBN 978-087-910-8885.
- Hadleigh, Boze (2015). Holy Cow!. Skyhorse Publishing. ISBN 978-163-220-5575.
- "Watch Jeopardy! Season 1998 Episode 57 S1998E57 Jeff Chrzanowski, Boze Hadleigh, Carol Tierney". OVGuide.com. Mar 20, 1998. Retrieved 8 December 2014.
- Hadleigh, Boze (2001), The lavender screen : the gay and lesbian films : their stars, makers, characters, and critics, Citadel Press, p. 11, ISBN 0-8065-2199-6
- Nonfiction Book Review - Hollywood Gays
- Nonfiction Book Review - Hollywood Lesbians