A #1 Audible Kids & Family favorite!

Join Detective D & Little D as they keep Letter Town SAFE AND SOUND!

Can you solve these mysteries before Detective D does?

  • "My mystery & letter loving son has fallen in love with your Letter Town mysteries. So much so that he has written his own for the entire alphabet and distributed them to all of our relatives!"

    – Illinois

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The cover of Darren Farrell's new book, Lion in Bed, with illustrator Maya Tatsukawa, out from Penguin Random House and Dial Books for Young Readers in October 2025.

Arriving October 2025!

A gentle and very silly picture book about the power of a good cuddle.

Papa Lion just can’t convince Little Lion to get out of bed this morning! They have so much to do, so Papa Lion decides to bring all the activities to him in bed, no matter how big and wild they are. From a full-diner breakfast to a soccer game and surprise party for Grandma, can anything convince Little Lion to finally get up?

More Than 1.5 Million Copies Worldwide!

Give This Book Away!

Prepare to open a very special book–a book that you read, but don’t keep. That’s right. This book isn’t destined for a pile in your room. It’s not going to gather dust on a bookshelf. This book is for you to read and enjoy, and then to give away. Yes, away, to someone you’ve never spoken to before.