{"product_id":"the-unknown-pre-order-aug-4-2026","title":"The Unknown (Pre-Order Aug. 4, 2026)","description":"\u003ch2\u003e\u003cstrong\u003e\u003cspan\u003eThe Unknown by Riley Sager (Pre-order Aug. 4, 2026)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eA chilling psychological thriller where a century-old disappearance, a haunted island, and a film crew trapped by dark secrets collide in Riley Sager's most suspenseful mystery yet.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eOne island. Two generations of disappearances. One terrifying mystery waiting to be uncovered.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFrom \u003c\/span\u003e\u003cem\u003e\u003cspan\u003eNew York Times\u003c\/span\u003e\u003c\/em\u003e\u003cspan\u003e bestselling author \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eRiley Sager\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e comes \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eThe Unknown\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, an atmospheric thriller that blends psychological suspense, supernatural mystery, and gothic horror into an unforgettable page-turner.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAspiring actress \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eMarin Keane\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e finally catches her big break when she's cast in a major Hollywood film based on one of America's most haunting unsolved mysteries—the disappearance of five women from \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNew Avalon\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, a secluded island on \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eLake Faraday, Vermont\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, in 1926.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBefore filming begins, the cast travels to the island for a week of research.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBut New Avalon has a dark history.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eOnce home to a commune of spiritual mediums, the island became infamous after five women mysteriously vanished without a trace. The only evidence left behind was five empty dresses hanging from the branches of an ancient oak tree. Some believe the women were murdered. Others insist they fled. But the most chilling theory comes from the diary of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eDaisy Rue\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, one of the missing women, who claimed a séance unleashed something ancient and terrifying.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSoon after arriving, Marin and her fellow cast members—including legendary actress \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eViolet Wright\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and acclaimed director \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eRonan Peters\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e—begin experiencing unsettling events. Strange symbols appear throughout the island, eerie sounds echo through the woods, and an unexpected emergency leaves everyone stranded with no way off.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThen people begin disappearing.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAs fear, paranoia, and suspicion consume the group, Marin turns to Daisy's century-old journal, determined to uncover the truth before New Avalon's horrifying past claims new victims.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePacked with gothic atmosphere, shocking twists, isolated suspense, and Riley Sager's signature storytelling, \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eThe Unknown\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a haunting thriller that keeps readers guessing until the final page.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3\u003e\n\u003cstrong\u003e\u003cspan\u003eWhy readers love \u003c\/span\u003e\u003c\/strong\u003e\u003cem\u003e\u003cstrong\u003e\u003cspan\u003eThe Unknown\u003c\/span\u003e\u003c\/strong\u003e\u003c\/em\u003e\u003cstrong\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e🏝️ Isolated island setting with eerie gothic atmosphere\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e👻 Supernatural mystery mixed with psychological suspense\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e🎬 Hollywood film crew trapped in a century-old disappearance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e🔎 Twisty investigation with shocking revelations and unforgettable suspense\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan\u003ePerfect for fans of:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cem\u003e\u003cspan\u003eThe Only One Left\u003c\/span\u003e\u003c\/em\u003e\u003cspan\u003e, \u003c\/span\u003e\u003cem\u003e\u003cspan\u003eThe House Across the Lake\u003c\/span\u003e\u003c\/em\u003e\u003cspan\u003e, \u003c\/span\u003e\u003cem\u003e\u003cspan\u003eMexican Gothic\u003c\/span\u003e\u003c\/em\u003e\u003cspan\u003e, \u003c\/span\u003e\u003cem\u003e\u003cspan\u003eThe Silent Patient\u003c\/span\u003e\u003c\/em\u003e\u003cspan\u003e, and readers who love gothic thrillers, haunted locations, locked-room mysteries, and supernatural suspense.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan\u003e🔍 SEO Keywords:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe Unknown Riley Sager, Riley Sager new book, psychological thriller, gothic mystery, supernatural thriller, haunted island novel, Vermont mystery, disappearance thriller, suspense novel, horror mystery\u003c\/span\u003e\u003c\/p\u003e","brand":"Riley Sager","offers":[{"title":"Hardcover","offer_id":50359485464769,"sku":"9798217044092","price":32.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/7767\/2385\/files\/the-unknown.jpg?v=1782496235","url":"https:\/\/thebookmatters.com\/products\/the-unknown-pre-order-aug-4-2026","provider":"The Bookmatters","version":"1.0","type":"link"}