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Michael Douglas spent 40 years keeping the Kathleen Turner secret. His new memoir just blew it up.

'One Helluva Ride' confirms the on-set romance Hollywood had gossiped about for decades, and it's only the start of what Douglas is disclosing.

Michael Douglas spent 40 years keeping the Kathleen Turner secret. His new memoir just blew it up.

Eighty-two years old. Six decades in Hollywood. Two Oscars. And apparently, a lot of receipts. Michael Douglas' memoir One Helluva Ride, published October 6 by Grand Central Publishing, has spent the past week dropping revelation after revelation across the entertainment press, and the conversation is not slowing down.

The one everyone latched onto first: Kathleen Turner. Among the most shocking revelations in the memoir is the truth behind his long-suspected, but never confirmed, affair with Turner, with whom he starred in the 1984 film Romancing the Stone. In the book, Douglas admits: "The truth is that during the production of 'Romancing the Stone,' Kathleen and I fell hard for each other and began a relationship." When his then-wife Diandra visited the set with their son, the jig was up.

Turner, for her part, is unbothered. After hearing that Douglas had revealed their affair, Turner told People, "Good heavens what a fuss about something 40 years ago! I love Michael and I look forward to enjoying the book." Gracious. Diplomatic. And it immediately became one of the week's most-quoted celebrity responses.

While appearing on Sirius XM's Andy Cohen Live, Douglas recalled asking Turner if she was OK with him including her in the book. "She said, 'Yeah.' She said, 'Fine,'" he revealed. "So, I told that story, and then I got permission and said, 'Kathleen, do I tell the rest of some of the stories that we've had in One Helluva Ride?' And she said, 'OK.'"

Turner was not the only co-star Douglas names. Douglas also addresses the speculation that surrounded his 1992 thriller Basic Instinct. Although Sharon Stone was frequently linked to him through Hollywood speculation, Douglas writes that his actual secret relationship during production was with Jeanne Tripplehorn. According to People, Douglas wrote in One Helluva Ride that he "fell very hard for Jeanne."

Then there are the stories that go beyond romance. Douglas reveals secret affairs, cocaine and alcohol abuse, and a rehab ultimatum from his first wife in the memoir. He also alleges a confrontation with Julia Roberts, and a cocaine-fueled evening with O.J. Simpson. Douglas opens up about a heated incident involving Julia Roberts at the Golden Globes. After witnessing his then-teenage son Cameron seemingly under the affectionate embrace of Roberts, Douglas, fueled by alcohol, confronted the actress. His outburst later led him to send roses as an apology.

In the memoir, the actor-producer opens up about heavy cocaine and alcohol use, and a "rehab or divorce" ultimatum from his first wife, Diandra. Douglas says his rehab stay was later exploited by a tabloid. He claims two fellow patients sold information about the program to a publication, and the story transformed his treatment for alcohol and drug abuse into a sensational headline portraying him as a sex addict.

The family chapter cuts deepest. The memoir touches upon Douglas' marriage to Catherine Zeta-Jones, his battle with stage four cancer, and his son Cameron's struggle with drug addiction and the law. Douglas reflects on fatherhood regrets and how surviving stage IV throat cancer changed his priorities.

He has been doing the full promotional circuit. Douglas talked about the affair at a book signing at the American Cinematheque's Egyptian Theatre, where he discussed his career between screenings of Romancing the Stone, The War of the Roses, Falling Down, and The Game.

With eight decades of drama to unpack, Douglas says in the sprawling, 500-page memoir released October 6 that the account reveals "who I became and the choices I made along the way." He told Deadline when the project was first announced: "After being asked for many years, I've finally decided it's time to tell my story on my own terms. Not the highlight reel, not the version shaped by headlines or box office numbers, but the real one."

What makes this particular memoir moment different from the usual celebrity book cycle is the specificity. Douglas does not reach for vague lessons or career retrospectives. He names names, confirms the rumors that have dogged him since the 1980s, and does so with apparent sign-off from the people involved. The O.J. story alone would have dominated a slower news week. The Kathleen Turner confirmation, which Hollywood had debated for four decades, got there first.

His memoir, published October 6, 2026, takes fans along for the whole ride, including detailing romances the world never knew about. Turner, now 72, got the final word. Her reaction in People was three sentences, and it won the internet anyway.

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