Circle

Are You My Mother?

The Impossible Crime (Mac B., Kid Spy #2)

Eva's Treetop Festival: A Branches Book (Owl Diaries #1)

Triangle

The Fat, Lazy, Smart Cat

Paolo, Emperor of Rome

The Best Nest

Eva and the New Owl: A Branches Book (Owl Diaries #4)

Square

Earn Your Wings! (Top Wing)

The Sound of Danger (Mac B., Kid Spy #5)

Eva Sees a Ghost: A Branches Book (Owl Diaries #2)

Mac Undercover (Mac B., Kid Spy #1)

The Haunted Cave (Top Wing)

Twenty Questions

Eva's Big Sleepover: A Branches Book (Owl Diaries #9)