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528 pp.
| Candlewick |
March, 2016 |
TradeISBN 978-0-7636-5470-2$16.99
(4)
4-6
Fans of the thirteen-year-old super-agent will rejoice at Ruby's return for a fourth adventure. This time, she pursues a phantom thief who steals from skyscrapers. Fearless Ruby enjoys the challenge, developing her parkour skills and cracking puzzles designed by prominent mathematician Marcus du Sautoy (further information about Ruby's challenges is appended). Despite its pacing issues, this is another exciting installation in the series.