Shield, Sword and Crown series: Shield of Stars (Book 1)
The first book in this trilogy, it tells the story of a little girl and her friend, Weasel. Weasel was an apprentice to a judge. Before this, he was a pickpocket. When he became the judge's apprentice, he goes straight and they become good friends.
One night, the police show up at the judge's door. Even though Weasel tries to erase the judge's involvement in a plot to overthrow the government, he is not successful. They both go to jail. Weasel is put into the tower with a little girl. They find a secret passageway and escape.
Little does the Weasel know, that the little girl's mother is a powerful woman who has the power to set the judge free...Read the book and find out how the judge is freed and if they can find the shield and magical sword so they can overthrow the bad king.