When one of Kayla's library books goes missing, King and Kayla's friend Jillian must help her solve the crime.

Dog-and-human detective duo, King and Kayla, must try to figure out how Raj's cat escaped from a locked house.

Mr. Summerling, Marly's neighbor, talked about being a treasure hunter, and news of his death has brought Marly into a treasure hunt of her own. In his will, Mr. Summerling left a treasure for Marly and two classmates, Isla and Sai. They barely know each other, but they have to work together with a series of riddles, puzzles, and clues to find the treasure.