{"product_id":"thunder-and-mercy-9781635923261","title":"Thunder and Mercy","description":"\u003cp\u003e\u003cstrong\u003e“A dazzling plot with characters who are rich and real and unforgettable.” —Lynda Mullaly Hunt, New York Times best-selling author of  \u003cem\u003eFish in a Tree\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a hidden diary the key to an unsolved secret from the American Revolution\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt’s 1979 and twelve-year-old Theodora “Thunder” Underwood is dreading her summer vacation once again. Every year, her scientist parents disappear on far-flung scientific expeditions, leaving her with relatives who clearly don’t want her around.\u003c\/p\u003e\u003cp\u003eBut this summer, Thunder is sent to Mount Pleasant, her aunt’s historic yet crumbling old mansion outside of Philadelphia once owned by Revolutionary War traitor Benedict Arnold. When Thunder discovers a mysterious diary written by Mercy, a girl her age who lived through the American Revolution, Thunder is plunged into a mystery that involves a shadowy prowler, a hidden ring, and mysterious spies—making her summer far more exciting than she ever expected.\u003c\/p\u003e\u003cp\u003eFast-paced and full of twists, this suspenseful middle grade novel transports young readers between the 1770s and 1970s as Thunder uncovers the truth behind a Revolutionary-era spy network—and discovers the importance of friendship, family, and her own voice along the way.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eStory Locale:\u003c\/strong\u003ePhiladelphia, PA\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor(s):\u003c\/b\u003e Jennifer Robin Barr\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Calkins Creek\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 7\/14\/2026\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 368\u003cbr\u003e\u003cb\u003eBinding Type:\u003c\/b\u003e Hardcover\u003cbr\u003e\u003cb\u003eSize \/ Weight:\u003c\/b\u003e 8 in H | 5.8 in W | 1.3 in T | 1 lb Wt\u003cbr\u003e\u003cb\u003eISBN:\u003c\/b\u003e 9781635923261\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAbout the Author\u003c\/b\u003e\u003cbr\u003e\u003cp\u003eJennifer Robin Barr is the author of two how-to books for adults and \u003cem\u003eGoodbye, Mr. Spalding\u003c\/em\u003e, which was her debut middle-grade novel.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAuthor Hometown:\u003c\/strong\u003e Wayne, Pennsylvania\u003c\/p\u003e","brand":"Ingram","offers":[{"title":"Default Title","offer_id":60206569029918,"sku":"9781635923261","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/4247\/3502\/files\/9781635923261.jpg?v=1791496477","url":"https:\/\/i55bookfairs.com\/products\/thunder-and-mercy-9781635923261","provider":"I55 Book Fairs","version":"1.0","type":"link"}