The Story of Once Is Not Enough
Once Is Not Enough opens in the world of Manhattan's ultra-wealthy, where money buys access but can't buy happiness—or so the film suggests. An aging Hollywood producer (Kirk Douglas) makes a calculated decision: marry a rich, spiteful woman to secure his financial future and, more importantly, keep his spoiled daughter happy. What could go wrong? Everything, as it turns out. The daughter, determined to wound her father, embarks on a deliberate campaign of seduction aimed at two men—a wealthy playboy and a struggling screenwriter—setting off a chain reaction of affairs, jealousy, and moral compromise that spirals across the Manhattan social scene. It's a film that wears its pulp-fiction DNA proudly, treating infidelity and emotional manipulation as the stuff of high drama rather than quiet tragedy.
Behind the Making of Once Is Not Enough
Once Is Not Enough arrived in 1975 as a major studio production from Paramount Pictures, backed by producer Howard W. Koch and directed by Guy Green. The film was adapted by Julius J. Epstein from Jacqueline Susann's 1973 novel of the same name—Susann, of course, was the author behind The Valley of the Dolls, so the DNA of tabloid-adjacent melodrama was baked in from the source material. The cast assembled was genuinely star-studded: Kirk Douglas carried the weight of the aging producer role, while Alexis Smith, David Janssen, George Hamilton, Brenda Vaccaro, Melina Mercouri, and Deborah Raffin rounded out an ensemble that felt like a who's-who of mid-'70s Hollywood. The film clocked in at 121 minutes of runtime, giving Epstein's script room to breathe and spiral through multiple romantic entanglements. While it didn't become a box-office juggernaut, it found an audience among viewers who craved the kind of unrestrained adult melodrama that the '70s specialized in—the era when major studios still bankrolled films about morally compromised characters in designer clothes. The IMDb rating of 5.167/10 suggests critics were mixed, but that's often the fate of ambitious soap operas.
What Makes the Performances Anchor Once Is Not Enough
What's striking about Once Is Not Enough is how the cast commits to the material without winking at the audience. Douglas, in particular, brings a weariness to his producer that feels earned—he's not playing a villain, just a man trying to hold onto relevance and his relationship with his daughter, even if it means marrying someone he doesn't love. Alexis Smith, as the wealthy lesbian wife, does something interesting with a character who could've been a caricature; there's real resentment and loneliness underneath the spite. The supporting cast, especially George Hamilton as the playboy and Brenda Vaccaro as the screenwriter's love interest, understand the assignment: they're in a melodrama, and they're going to make every line of dialogue matter. I keep coming back to how seriously everyone takes the material. There's no camp here, no knowing smirk—these actors are treating a plot about seduction and betrayal as if it's King Lear. That earnestness is part of what makes the film work, even when the plot threatens to tip into absurdity. The chemistry between Douglas and his on-screen daughter (Deborah Raffin) carries an uncomfortable edge that suggests real family dysfunction rather than theatrical posturing.
Where to Stream Once Is Not Enough Online
Once Is Not Enough is available across major OTT services, which means you don't have to hunt through specialty rental platforms to catch it. The specific streaming homes for this film are listed in the Where to Watch widget at the top of the page—that's the easiest way to confirm which platform has it in your region right now, since availability shifts. If you're tracking down '70s melodramas or want to revisit Kirk Douglas's later career work, Movie OTT makes it simple to see where titles are currently streaming without clicking through five different apps. The 121-minute runtime means it's a manageable evening watch, and most major platforms include it in their standard catalogs.
Frequently asked questions
Q: Is Once Is Not Enough based on a novel?
Yes. The film was adapted from Jacqueline Susann's 1973 novel of the same name. Susann was also the author of The Valley of the Dolls, so she had a proven track record with glamorous, scandal-filled narratives before this one.
Q: Who directed Once Is Not Enough?
Guy Green directed the film. He was an experienced hand with character-driven stories and worked with the ensemble cast to bring out nuanced performances from everyone involved.
Q: What's the runtime, and is it worth the time commitment?
Once Is Not Enough runs 121 minutes. If you enjoy '70s melodrama and aren't bothered by slow-burn character studies wrapped in soap-opera plotting, it's absolutely worth your time.
Q: Who plays the lead role in Once Is Not Enough?
Kirk Douglas stars as the aging movie producer at the center of the story. His performance grounds the film's more outlandish plot turns in genuine emotional stakes.
Q: Does Once Is Not Enough hold up today?
It depends on your tolerance for melodrama and dated attitudes toward sexuality and class. The performances are solid and the production values are solid, but the film's worldview is unmistakably of its era.
Final Thoughts on Once Is Not Enough
Once Is Not Enough isn't a perfect film—its plot can feel contrived, and some of the character motivations strain credibility. But there's something refreshing about a major studio production that refuses to moralize about its characters' behavior. Nobody learns a lesson. Nobody gets punished neatly. The wealthy keep scheming, the beautiful keep seducing, and the damage ripples outward. That's not a happy ending, but it's an honest one. If you're in the mood for unironic '70s glamour and moral messiness, this one delivers.
