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Your kid gets a real mystery in the mail. The first letter is free.

Real clues, maps, collectible cards and more, all in one envelope. No screens required.

What parents are saying
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"He woke up in the middle of the night to use the bathroom and asked if the mail came yet."

D

Dad of a 5 year old detective

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"After the first story, my grandsons wanted to know if there were more."

G

Grandma of two detectives

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"This is the most she's talked to me in her life."

D

Dad of an 8 year old detective

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"They ran to the mailbox every single day."

P

Parent of two detectives

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"He LOVES The Story Post!!!! Like obsessed."

M

Mom of a 6 year old detective

Choose Your Mystery

Pick a story and we'll mail the first letter free. If they love it, continue the adventure with the full 6-letter mystery.

How it works

  • Pick a mystery

    Choose from 8 original stories for ages 4-10.

  • We mail the first letter free

    Your child gets a real envelope with clues, maps, collector's cards and more inside.

  • They start solving

    Every clue builds toward cracking the case. One new letter arrives each week for 6 weeks. No screens required.

  • They'll ask what happens next.

    The full story is waiting. Grab the full 6-letter mystery and we'll pick up right where they left off.

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🧠 More than just a mystery

While they're solving the case, they're learning about real topics like wildlife, ancient history, the solar system and more. Every story is a reading lesson they don't see coming.

Letters

Every letter is a new chapter in the mystery

Map & Reference Lists

Reference materials they use throughout the whole story to help solve the mystery

Clues to crack the case

Every letter brings new clues your child uses to solve another piece of the mystery along the way

Collector's cards

Collectible cards they earn with every letter

Comic Book Finale

The last letter includes a comic book that brings the entire story to life from start to finish