"Riveting . Blake weaves a sprawling spiderweb of a plot that spans nearly a century and thrills from start to finish, though some suspension of disbelief is required. With a memorable protagonist, jaw-dropping twists, and provocative questions about the nature of memory, this page-turner is nearly impossible to forget." -- Publishers Weekly (starred review) "An irresistible concept beautifully executed - certain to be one of the year's best thrillers." -- Lee Child, #1 New York Times bestselling author of the Jack Reacher series, on Anna O "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, on Anna O "Like blockbusters such as The Maidens and The Girl on the Train." -- Washington Post on Anna O "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, on Anna O.