Once a Villain

Once a Villain by Vanessa Len is set to be published by HarperCollins Canada, Limited on August 19, 2025. This 512-page book is written in English and serves as the final installment in the Only a Monster trilogy. The story follows Joan, who faces the consequences of her failure to stop Eleanor, now ruling a harsh timeline where monsters openly prey on humans. As Joan navigates this new reality, she must confront her past and the choices made by those she loves.
Readers will find a blend of fantasy and contemporary themes as the narrative unfolds in a world where love and rivalry intertwine. Joan, Nick, and Aaron grapple with their complex relationships while trying to restore a better timeline. The stakes are high as they confront the challenges posed by powerful monsters and the manipulation of time itself. This edition promises to deliver a thrilling conclusion to the trilogy, engaging fans of young adult fiction, romance, and science fiction.
Official synopsis Publisher
“Mind-bending, heart wrenching, and unputdownable!” –Stephanie Garber, New York Times bestselling author of the Caraval series, on Only a Monster
The final book in the lauded Only a Monster trilogy is here–where the unstoppable love and high stakes of Divine Rivals meets the propulsive thrills of This Savage Song in a last-ditch, breathless race against time.
Joan has failed to stop Eleanor.
Now Eleanor rules over a cruel new timeline where monsters live openly among humans, preying on them and subjugating them.
Nick–once a hero to humans, and Joan’s first love–is tormented by the choice he made to save her over the timeline itself. And Aaron–the ruthless heir to a powerful monster family–now finds himself in a world where monsters have power beyond imagining while his feelings for Joan grow.
Wrenched between love and rivalry, the three of them must negotiate their fractured pasts to survive the new world and restore what was lost. Because only they remember that there was once a better timeline.
But how will they defeat a whole world of monsters with control over time itself?
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