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Description
Nina and the Mysterious MailboxBy: Rebel Girls, Marti Dumas Illustrator: Kristina Kister Series: Secret Society of Rebel Girls "Girls running for office, secret leadership lessons from the past, and a dash of mysterious mailbox magic? Yes please!" Kate Messner, New York Times best selling author of Breakout and the History Smashers series A school election. A mysterious mailbox. And a letter from . . . Cleopatra? Middle school is so weird. Nina is determined to help her best friend
By: Rebel Girls, Marti Dumas | Illustrator: Kristina Kister | Series: Secret Society of Rebel Girls"Girls running for office, secret leadership lessons from the past, and a dash of mysterious mailbox magic? Yes please!" —Kate Messner, New York Times best-selling author of Breakout and the History Smashers series
A school election.
A mysterious mailbox.
And a letter from . . . Cleopatra?
Middle school is so weird.
Nina is determined to help her best friend Maya win the race for 6th grade representative. But when she uses her robotics skills to spy on Maya’s opponent, the girls wind up in detention. There, they are asked to write a letter to a woman from history. Nina pours her heart out to Cleopatra, and instead of throwing the letter away so her parents don’t find it, she slips it into a battered old mailbox she and Maya find in the woods. It was all just a game . . . until a giant scroll arrives at Nina’s house, signed by Cleopatra herself!
Do the girls really have a pen pal from 2,000 years ago? Will their friend Zoe ever speak to them again? Why is their science teacher acting so oddly? And what on Earth is a time taco?
Original story and characters by Anna McCleery
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4.5 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
Awesome shoes!
Size: 4 Big Kid, Color: Aqua/Multi
My daughter is SUPER picky about shoes and loves these. They are easy and quick to put on, run true to size, and most important COMFORTABLE. She is outgrowing them and will have to get her the next size up. Highly recommend for picky kids
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Reviewed in the United States on December 4, 2025
★★★★★ 5
LOVE THESE
Size: 3 Little Kid, Color: Hot Pink/Multi
Really nice. Pix don’t do them justice.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Great for busy feet
Size: 13 Little Kid, Color: Hot Pink/Multi, Size: 13 Little Kid, Color: Hot Pink/Multi
My five-year-old daughter loves these Skechers slip-ins—and she is not easy on her shoes! You can see in the photo, she’s already put plenty of miles on them. They’ve been through the washing machine at least twice and still look great—the bright colors are a big hit with her and they hold up well in the wash.
One of the elastic bands on top did come loose, but I was able to fix it quickly with a dab of superglue. She slips them on and off all by herself, which is perfect as we’re still learning to tie laces. All in all, a great purchase for the price—especially since kids grow so fast and put their shoes through a lot!
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Reviewed in the United States on May 24, 2025
★★★★★ 5
Cute slip-ons - so easy and quick!
Size: 13 Little Kid, Color: Hot Pink/Multi
These shoes are adorable, comfortable according to my kid, and super easy to pull on!
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Reviewed in the United States on January 17, 2026
★★★★★ 5
Durable
Size: 6 Big Kid, Color: Aqua/Multi
Good shoes. True to size
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Reviewed in the United States on February 18, 2026