A glorious celebration of children’s imagination and a reminder to keep an eye open for the unexpected, by two award-winning, internationally bestselling picture book creators. Penny can’t believe what she’s seeing in a packed underground carriage: a tiger’s tail… a tiger’s paw… a real big stripy tiger! When the tiger makes a sudden, marvellous leap across the seats, Penny joins in the action and an unexpected friendship forms. An exciting, action-packed story about a child who spots a tiger on the tube, and the adventure they go on together as they return a baby's lost teddy. A joyful, rhyming read-aloud!