Sian Gilbert
Sian Gilbert is a UK-based thriller author represented by Helen Heller at the Helen Heller Agency.
Her debut thriller She Started It, published June 13, 2023, achieved significant commercial success as a Book of the Month Main Selection and an Amazon Editors' Pick for Best Mystery, Thriller & Suspense.
Her second thriller, I Did Warn Her, published June 18, 2025, earned a starred review from Booklist, demonstrating her growing critical recognition.
Her third novel, The Five of Us, is scheduled for August 2026.
She maintains an active social media presence on Instagram, TikTok, X, and Facebook under @sianmgilbert.
