King & Kayla are back on the case in this laugh-out-loud mystery from the Theodor Seuss Geisel Honor Award-winning series.

King and Kayla are playing fetch with Jillian and Thor. Jillian throws King's favorite ball too hard, and it goes over the fence and into the neighbor's yard. The ball she brings back isn't King's. Where is King's favorite ball?

Analytical Kayla creates a list of possible explanations to investigate. Sensitive King puts aside his worries and questions the cat hiding under the porch, who claims a mouse did it. How could a mouse take King's ball?

With simple, straightforward language and great verbal and visual humor, the King & Kayla series is perfect for newly independent readers. King and Kayla model excellent problem-solving skills, including working as a team, gathering facts, making lists, and evaluating evidence.