An evocative tale about a cat that appears and vanishes into the seaside fog, depending on the season. Every day when Hannah accompanies her grandfather to the seaside, she tries to tame the wild gray kitty they see, which she calls Fog Cat. Gradually she draws the feral cat closer, and with tidbits of fish and the lure of a warm hearth, she wins its trust. All through the winter, Fog Cat is Hannah’s pet, but come spring it disappears again, leaving behind a kitten for Hannah to raise. Helmer’s story is moving, but never cloying; the watercolor greens and blues of Mombourquette’s palette wash the beaches with mist. (Picture book. 5-8)