League of Llamas 4: Rogue Llama by Aleesah Darlison

League of Llamas secret agent Phillipe Llamar is on the run! Determined to clear his name after being framed for a crime he didn't commit, he dons a disguise and goes on the hunt for the true criminal - one Ratrick Tailbiter. But the more Phillipe investigates, the less the case makes sense and the more things start becoming suspiciously . . . smelly.

From Ratopia to Catagonia, Phillipe's journey leads him far from home. Will he be able to solve this mystery alone? Hunted by friends and enemies alike, this is Agent 0011's most daring adventure yet!