“A Renaissance-era artist’s diary stands to shock the world, and to change the lives of those who possess it, in the entertaining and revealing novel Octavo.” — Foreword Clarion Reviews

“Marty Neumeier uses a rich palate to paint a gripping historical whodunit.” — BlueInk Review

“Octavo is riveting from start to finish. A must-read for book clubs, especially those who love their historical fiction infused with intrigue.” — Deborah Gorgen, marketing strategist, Clarus Communications 

“Count me a willing victim of Scarlett fever. Octavo is the most infectious thriller I’ve read in ages. I absolutely fell in love with the characters.” — Chloe Beneteau, book club president 

“Some writers are deep thinkers who feel the soul of their civilization, reflecting its joys, sorrows, the Zeitgeist. Others possess the technical know-how to captivate readers with thrilling narratives and action-packed mysteries that keep them turning pages. Marty Neumeier is unique in his ability to accomplish both at the same time. Octavo is bound to become a cultural phenomenon.” — Adomas Puras, author and studio owner

“Octavo is that rare treat that lingers in the mind long after the book is set down. Marty Neumeier, a modern-day renaissance man, creatively blends genres to masterfully craft a compelling and unforgettable adventure for the ages.” — Terri Burke, strategy consultant, Spark

“This is such an original way to tell a story—or rather two stories. It really shows you how today’s world parallels the Renaissance.” — Gemma Howell, history professor, University of Bologna

“It’s like watching a great movie—you know from the first scene you’re not going to be disappointed.” —Jeff Stadden, consultant, The Bland Enemy

“The audio is mind-blowing. I just listened to it as the rain came down outside. Every scene, every episode. Enchanting.” —Jan Flidr, business consultant, LASVIT

“I got so hooked on the weekly episodes of Octavo that I had to clear my calendar for Wednesday nights.” —Brent Galicia, writer 

“The audiobook is so beautifully produced. Anyone can have an idea, but only a fraction of those apparently brilliant people (or so they claim) get it done. Marty Neumeier gets it done, and brilliantly.” — Kevin Duncan, author of The Idea Book 

“Leave it to Marty Neumeier to not only write a crackerjack novel, but reimagine publishing at the same time.” — Jeremy Galstad, magazine editor, Content

“Octavo is the ultimate meta-book—a book about a book about books.” — Melanie Stevenson, librarian, UC Berkeley

"A masterful blend of history, mystery, and inspiration. With a narrative as intricate as the Renaissance itself, Octavo unravels the power of creativity, the enduring value of shared knowledge, and the unstoppable force of curiosity. A must-read for anyone who seeks to challenge convention and embrace the transformative potential of ideas." — Daryl Choy, experience designer, Choy Inc.

“I love the immersive quality of the audio version. Can’t wait to listen to it again.” — Kadu Nakashima, CEO, Nakashima Branding

“A tour de force of intricate plotting. Just when you think you know where it’s going, it swerves off in some new direction.” — Paul Gellen, TV producer

“Octavo heralds a unique new voice in American fiction.” — Stephen Pedroff, writer-producer-director, SP Inc.

“Holy Mother of God. This book is sensational.” — Gregory Belson, graphic designer