Do you have a sibling? Yes? Then The Evil Princess vs. the Brave Knight is for you! Real-life siblings Jennifer L. Holm and Matthew Holm have already created some of the most memorable characters in children's literature (Babymouse and Squish, anyone?). They have teamed up again to create a pair of siblings who are each other's complete opposite. The Princess and the Knight do everything they can to cause each other trouble, while the Magic Mirror tries to reign in the chaos.