Tiana Nova is 22, broke, brilliant, and desperate. An art student from Los Angeles studying at Brera Academy in Milan, she lives in a tiny apartment, wears the same cargo pants and black top to every gallery opening, her blonde ponytail her signature. When her scholarship is suddenly cut and her rent is due, a DM from a girl named Maya offers her $50,000 for seven days on a private island to model for a luxury brand shoot. It's enough to clear her debt and survive the year. She says yes.She arrives on Thorne Island and the boat disappears.There is no shoot. No crew. No way back. The villa is empty except for three men waiting in the living room who already know her name, her age, her Instagram, and her bank balance.Julian Thorne, 31, owns the island. Cold, calculated, and possessive. He saw Tiana six months ago in a Milan gallery, arguing with a professor in those same cargo pants, and decided she was his. He doesn't ask, he buys. He is the one who left the Saint Laurent dress on her door with a note: _Wear this. Show me what I bought._Elias Moretti, 29, hotel empire heir. Tattoo on his neck, smile that ruins girls. Flirty, physical, unable to keep his hands to himself. He is the first to brush her knee under the table and the first to fall.Dorian Cole, 32, media mogul. Glasses, quiet, brilliant. He doesn't want her body first, he wants her mind. He is the most dangerous because he is patient. He knocks instead of entering. He asks to sit.They tell her the deal is simple: Her time was bought. Seven days on Thorne Island, with them. Four rules: You eat with us. You wear what we tell you when we ask. You don't sleep alone in the guest villa. And you don't fall for us — because when you do, we don't let go.Tiana is furious. She refuses the dress. She keeps her cargo pants on. She refuses to be owned. But she is trapped, and they are everywhere.Day One is a tense dinner where they stare at her like she's already theirs. Day Two, Dorian knocks at midnight to bring her water she never asked for, sits on the edge of her bed, and tells her the truth: They already paid her full tuition at Brera, Elias bought her last three paintings for $15k each, and Julian threatened a gallery into giving her a solo show. This was never about seven days.Day Three, Elias takes her to a private beach alone and almost kisses her. Julian sees it from his office window, loses control, drags her inside and kisses her for real — angry and possessive. She slaps him. He loves it.Day Four, Tiana learns to play them. She finally wears the black Saint Laurent dress with the thigh-high slit to breakfast to punish them. All three stop breathing. She lets Elias teach her to swim. She lets Dorian read her sketchbook. She ignores Julian, and he comes undone.Day Five, she learns Maya was paid $10k to lure her there. She was tricked. But the $50k in her account is real, and she keeps it.Day Six, the boat comes early. The captain says she can leave right now if she wants. All three billionaires wait on the dock, terrified. She looks at the boat, then turns around and walks back to the house. "You paid for seven days. I have one day left."Day Seven, she has to choose. She has spent six days being kept, but now she holds all the power. Three filthy-rich, possessive men are obsessed with her, jealous of each other, ruined for anyone else. But the boat is coming back for real at sunrise.Julian wants to own her. Elias wants to have her. Dorian wants to know her. Who will she choose when she finally has the chance to leave Thorn Island?_Kept On Thorne Island is a dark, slow-burn reverse harem billionaire romance about obsession, luxury, jealousy, and a girl from Los Angeles who goes from being kept to doing the keeping._