Otter is a nerdy, rule-following citizen of Hilltown, who serves as the town’s auditor, appraising the work of the other animals in the community. He is shunned because of his role as auditor, but things change when an ominous shadow appears on the horizon.

Otter is a well-loved member of the Hilltown community. As this book opens, the whole town is excited for the upcoming Hilltown Festival and especially the race around Lake Furry! Otter swims for fun, but his friend, Turtle, is in it to win it. All the animals are waiting to see who will win first place and the big question is can ANYONE beat Gator?!?

Otter the Auditor is back and this time he's out to solve a mystery! Who is the mysterious stranger appearing and disappearing around town? Why do the villagers seem to think it's Otter in disguise? What do they want with Hilltown?!?