Â Hermelin Hermelin is a noticer. He is also a finder. The occupants of Offley Street are delighted when their missing items are found, but not so happy to learn that their brilliant detective is a mouse! What will happen to Hermelin? Will his talents go unrewarded? About the Author: Mini Grey Mini Grey was given her name after being born in a Mini in a car park in Newport, Wales. She studied for an MA in Sequential Illustration at Brighton under the tutelage of John Vernon Lord. Mini also worked as a primary school teacher in Oxford, where she now lives.