“Absolutely un-put-down-able, more exciting than an X-box and a rollercoaster combined.”–Kirkus, starred review
“If you’re a fan of The Maze Runner and Alex Rider, you might want to pick up SYLO… A fast-paced read and a huge cliffhanger.” —EW.com
“[An] extremely high-octane story that’s the equivalent to a summer movie blockbuster.” —Booklist
“An entertaining and creepy tale.” —Publishers Weekly
“This action-fueled, end-of-the-world-as-we-know-it adventure… should have teen reader clamoring for the next installment.” —VOYA
“MacHale pens some terrific and unique action scenes… will leave readers hungry for the next installment.” —SLJ
“I’m not sure anyone does suspense quite like D.J. MacHale. I ripped through the pages of SYLO, a relentlessly fast-paced, intriguing, expertly-written tale that leaves you breathless and satisfied, yet wanting more. Highly recommended.” James Dashner, New York Times bestselling author of the Maze Runner series
“SYLO will have your pulse racing and your head spinning. Make plans to stay up all night finishing it.” Michael Grant, New York Times bestselling author of the Gone series
“SYLO is D.J. MacHale at his finest — he’s crafted a book full of friendship, mystery and heart-pounding, spine-tingling adventure.” Holly Black, New York Times bestselling author
“Packed with thrilling chases, daring escapes, and breathtaking action sequences, SYLO will grab the reader’s attention from the first page and not let go until the final, stunning conclusion!”—Michael Carroll, author of The Quantum Prophecy
“I have no fingernails left! I chewed off every last one of them while I fretted over the fate of Tucker and his friends. Well done, Mr. MacHale.”—PJ Haarsma, author of the Softwire series
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