King & Kayla Books in Order

King and Kayla find Fred, a dog without a collar who nevertheless knows commands. As Kayla gathers facts, King detects smoke and hamburger smells, giving the pair clues that may connect Fred with a nearby campground.

Kayla bakes peanut butter treats for her friend Jillian’s new puppy, Thor, but the treats disappear and King becomes a suspect. Kayla examines the evidence while King contributes his keen sense of smell to the investigation.

During a game of fetch, King’s favorite ball lands across a fence, but the ball returned to him is different. Kayla considers possible explanations while King questions a neighborhood cat who blames a mysterious mouse.

Kayla and Mason receive nearly identical messages written in an unfamiliar code. Comparing the letters leads Kayla to notice missing vowels and one differing word, while King’s nose supplies another clue to the mysterious sender.

Kayla’s lost tooth disappears from the special pocket in her tooth-fairy pillow. She retraces her steps and questions Mason, while King detects a puzzling smell that helps the pair investigate before the tooth fairy’s visit.

Mr. Gary blames Thor for overturned trash cans and damaged vegetables in his garden. King and Kayla investigate the accusations, comparing what they know about the dog with clues that suggest another animal could be responsible.

Asia loses her gold ring while playing in the snow with Kayla and Mason. Kayla retraces their activities, while King follows his own observations and considers whether a bird's interest in shiny objects could help explain its disappearance.

Kayla cannot find the library book she needs to return before borrowing anything else. As she and Jillian investigate, King's nose provides clues involving other books and the people who may have handled the missing one.

Raj asks King and Kayla to find his missing cat, Blue, who vanished from a locked house and missed two meals. As they investigate, Raj's description makes King wonder whether he already knows the elusive animal.