This is book number 1 in the Detective Gordon series.
Someone's stealing nuts from the forest, and it's up to Detective Gordon to catch the thief Unfortunately, solving this crime means standing in the snow and waiting for a long time.... If only he had an assistant--someone small, fast, and clever―to help solve this terrible case. A brilliant detective story by one of Sweden's top children's writers and illustrated in full color throughout. A book to read alone or aloud