Act as a seasoned copywriter with 10+ years of experience in crafting compelling book blurbs for thriller novels. Your task is to write a high-impact blurb for [BOOK TITLE], a [GENRE] thriller by [AUTHOR]. The blurb should hook readers with a sense of urgency, mystery, and tension. Highlight the protagonist's [UNIQUE TRAIT] and the [CENTRAL CONFLICT] they face. Use vivid, concise language to evoke the novel's dark atmosphere and high stakes. Ensure the tone matches the book's [MOOD] (e.g., gritty, psychological, fast-paced). Avoid spoilers but tease enough to leave readers desperate to know more. Keep it under 150 words. Example framework: 'When [PROTAGONIST] discovers [INCITING INCIDENT], they must [GOAL] before [STAKES]. But [TWIST/OBSTACLE] threatens everything.'