Anna & Elsa: Sisterhood is the Strongest Magic is a book series written by Erica David and published by Random House. The series continues the adventures of Princess Anna, Queen Elsa, Olaf the snowman, and the rest of the characters from Disney's 2013 animated feature film, Frozen.

The book series was released on January 6, 2015 following the first two books All Hail the Queen and Memory and Magic.

Cover Title Release Date

All Hail the Queen January 6, 2015

Now that the castle gates are open, Anna and Elsa are thrilled to be finally getting to know their kingdom. Anna bubbles with enthusiasm for all the things to do and the people to meet in Arendelle, and Elsa loves using her magic to help the town. But sometimes even a queen needs a day off.

Memory and Magic January 6, 2015

After years apart, Anna and Elsa are finally getting to know each other as sisters. But Anna still wishes she could remember the magical times they had together when they were younger skating and making snowmen, even in the middle of summer! An eager young troll claims he can restore the memories that Pabbie removed, but Elsa's not so sure. Maybe it's time to make new memories!

A Warm Welcome March 10, 2015

Olaf has news for Elsa! He has heard of a summer queen from a summer land with summer magic someone with similar powers as Elsa’s, who can control fire and heat. He says her land is trapped in an eternal summer. Olaf thinks it sounds great, but Elsa and Anna think she might be in trouble. Either way, a journey is in order!

The Great Ice Engine May 12, 2015

Anna has an adventurous spirit. Elsa has magical power over ice and snow. Together the sisters explore the mountains, palace, fjords, and beyond as they finally get to know each other as sisters and friends.

The Polar Bear Piper July 28, 2015

Even though Arendelle is a cold, snowy place, polar bears are still a very rare sight until now! A family of polar bears has appeared on the outskirts of town and have started to cause mischief. Olaf loves the bears, but Elsa and Anna need to find out why they have suddenly appeared and how to get them back to their Arctic home!

The Arendelle Cup September 8, 2015

It's time for the Arendelle Cup--an annual 150-mile sleigh race. People come from far and wide to compete, and this year, to celebrate the castle gates finally being open, Anna and Elsa are going to represent Arendelle themselves!

The Secret Admirer January 5, 2016

When strange gifts and notes begin arriving at the castle, it seems that Elsa might have a secret admirer somewhere in Arendelle. Olaf is thrilled! He loves 'love'. But Anna and Elsa want to find out who the admirer is.

Return to the Ice Palace July 5, 2016

Anna and Elsa are hosting very important guests - and what better way to impress than to show them the beautiful Ice Palace Elsa created high in the mountains? But their visitors get a big surprise when the ice palace is taken over by Elsa's tiny Snowgies!

Anna Takes Charge January 3, 2017