The Smile Thief: A Story For All Turtles - The Smile Adventures, #2

The Smile Thief continues where The Smile Ambassadors ends. Little Constance Baker is delighted to bring her two-headed turtle back to the Maytown Fair to race in The Curator's Big Circus Sideshow Turtle Race where Zack and Mack meet some old friends. Unbeknownst to Constance, her family, or Zack and Mack, there are various players wishing to possess the boys for their own nefarious purposes. The Smile Thief, set in this current time, begins a journey that takes little Constance around the world which leads to the discovery of the deep and traumatic secret humans have hidden from themselves and their collective memory since the ancient mists of time.
Turtles have long had an oral tradition. The Smile Thief is the second story in a trilogy based on the Pirandellian extrospections and exploits of Zack and Mack, a real, live, two-headed turtle currently living in the Northern Hemisphere. As Zack and Mack are just a turtle; (albeit, with two heads), their straightforward writing style is suitable for humans of all ages.