Christina reviewed The Unbreakable Code by Jennifer Chambliss Bertman
Review of 'The Unbreakable Code' on 'Goodreads'
4 stars
I enjoyed at least as much as The Book Scavenger. Many characters from the first book undergo growth from the first adventure to the second. The kids arrive at puzzle solutions in a credible thinking process and timeline; they develop enough psychological maturity to detect that adults are indeed flawed and complicated; they show creativity. Different, lesser traveled explorations of San Francisco's history and geography (including, to my great delight, a local dessert I can find in a supermarket's freezer case hundreds of miles away) make this a highly rated read.