A glorious celebration of children's imagination and all the wild things that grown-ups miss, by two award-winning, internationally bestselling picture book creators. Penny can't believe what she's seeing in a packed underground train: a tiger's tail... a tiger's paw... a real big stripy tiger! When the tiger makes a sudden, marvellous leap across the carriage, Penny joins in the action and an unexpected friendship forms.

Philip Ardagh, illustrated by David Melling