Hugh Ashton is the author of many bestselling Sherlock Holmes stories for adults. The titles in the Sherlock Ferret series are his first books for children. After 28 years living in Japan, Hugh now lives in the city of Lichfield in the English Midlands, together with his wife Yoshiko (and no ferrets).

Andy Boerger is an illustrator and storyteller originally from Ohio, now living in Tokyo. He has illustrated several children's books, including the popular What Does the Tooth Fairy Do With Our Teeth? and many of his own stories and illustrated essays can be found on his blog, along with dozens of pen & ink illustrations of animals and other wonderful things. His Tokyo habitat includes Feather the Ferret, a spunky creature who reminds Andy a bit of his departed friend Vinnie, who served as inspiration for the Sherlock Ferret character to both the author and the illustrator of this and other mystery tales.