"A riveting, unsettling crime novel that will keep you turning pages well past your bedtime. Is Anna O a sleeping beauty or a sleeping killer? Matthew Blake's tension-filled thriller is as elusive and mysterious as sleep itself." -- Nita Prose, #1 New York Times bestselling author of The Maid and The Mystery Guest

"An irresistible concept beautifully executed--certain to be one of the year's best thrillers." -- Lee Child

"The most talked about thriller of 2024." -- Today Show

"Steeped in mythology, psychology and true-crime lore, Blake's cliff-hanger features a young woman who's been asleep since she murdered her two besties four years earlier. Now it's time to wake up Sleeping Beauty . . . and unleash a cascade of twists likely to outfox all but the sharpest thriller mavens." -- People

"An audacious, inventive mystery, a thriller of ideas, and--here's irony for you--a novel about sleep to keep you up late. Anna O reads like a dream but unsettles like a nightmare; the premise is original, the writing stylish, and the payoff unforgettable. You won't forget her name." -- A.J. Finn, #1 New York Times bestselling author of The Woman in the Window

"A wickedly stunning work. Blake's experience as a screenwriter is on full display here as he ramps up the suspense and carves out his cast of wonderful characters with the skill of a real pro. The twist is one of the best I've read and ranks right up there with The Silent Patient. Sure to be wildly popular and to have fans clamoring for Blake's next work." -- David Baldacci

"Like blockbusters such as The Maidens and The Girl on the Train." -- The Washington Post

"Blake never lets the reader, or his hero, get comfortable, delivering one game-changing twist after another. The exhilarating results are likely to shock even seasoned thriller fans." -- Publishers Weekly (starred review)

"Anna O delivers one gasp after another as it moves relentlessly towards its surprising and remarkably persuasive finale." -- The Anniston Star

"Anna O sits at the pinnacle of psychological suspense! It's a nonstop thrill ride through the darker sides of the human mind, filled with plot twists galore and populated by characters who are utterly real and undeniably appealing. This novel is written in the voice of a natural-born storyteller." -- Jeffery Deaver

"Once you pick it up, there's no putting it down. Layered and grandly operatic in scope and tension." -- Kirkus Reviews (starred review)

"Anna O takes a spellbinding look at a sleeping disorder that sounds like the stuff of horror movies . . . With masterful control over a large cast of characters plus a plot that keeps you guessing, Blake proves to be at the top of his game with this story. Reminiscent of The Silent Patient in the best ways." -- Stephanie Wrobel

"This one gets in your head. I may never sleep again."
-- J.D. Barker, New York Times Bestselling author of Behind a Closed Door