Review by Booklist Review
After the opening chapter cleverly reintroduces characters and memorable moments from book one to the cliff-hanger that closed book four, the twins' alien abduction adventure concludes and the McDonald family vacation continues. In the backseat of the Ferrari, Coke and Pep attempt to decipher clues in time to foil evil Dr. Warsaw while their road trip winds through New Mexico, Arizona, Nevada, and California. Grayscale illustrations include many photos of roadside attractions. And from time to time, Gutman renews his page-one promise to readers that, yes, Coke will be thrown into a volcano before the end of the book, the final volume in the amusing Genius Files series.--Phelan, Carolyn Copyright 2015 Booklist
From Booklist, Copyright (c) American Library Association. Used with permission.
Review by Horn Book Review
This last leg of twins Coke and Pepsi's road trip takes them from the Hoover Dam to the Golden Gate Bridge before they finally convince their hapless parents that they're endangered by the sinister Dr. Herman Warsaw. The humor can be grating, but the mystery-adventure's stimulating format includes now-familiar series of codes, ciphers, and hidden clues combined with photos and Google maps links. (c) Copyright 2015. The Horn Book, Inc., a wholly owned subsidiary of Media Source, Inc. No redistribution permitted.
(c) Copyright The Horn Book, Inc., a wholly owned subsidiary of Media Source, Inc. No redistribution permitted.