A review by mldavisreads
Mask by Kate Hannigan

5.0

Middle grade alternative historical fiction. This book takes us back to the WWII era and the newly formed "Infinity Trinity" of young female superheroes (see [b:Cape|51120569|Cape (The League of Secret Heroes Series)|Kate Hannigan|https://i.gr-assets.com/images/S/compressed.photo.goodreads.com/books/1561870198l/51120569._SX50_SY75_.jpg|65814463], this is the second book in a series and wouldn't fully make sense on its own). Akiko teleports the group to San Francisco, where she shows and tells the impact of the Japanese internment camps on her family and neighborhood. They find the relocated headquarters and get up to speed on the latest threats: a woman referred to as the "Doll Lady" who is writing letters containing military secrets, and the Side-Splitter-- an evil clown with an army of performers around the city ready to do his bidding. As the girls join the battle, they crack codes in radio transmissions, discover new superpowers, and also discover the real superheroes working behind the scenes.

Real history in this book is extensive, including: Japanese balloon bombs, internment camps, the Doll Lady spy case, female cryptographers, and the importance of radio transmissions. It is mixed in with superheroes, villains, and superpowers such as telekinesis, teleportation, and controlling the weather. It all adds up to a lot of information and a lot of fun. I look forward to book 3!

Thank you to Netgalley and the publisher for the chance to read a digital advanced copy in exchange for an honest review.