The adventure reaches its climax as Tiger and Luna enter a famous painting by Diego Rivera. Only this time, they're not alone. The kids are accompanied by Viola, the owner of the fantastic frame and mother of the boy who went missing inside it over fifty years ago. As the trio traverses the world of The Flower Vendor (Girl with Lilies), can they end Viola's search once and for all? Praise for Danger! Tiger Crossing: "Ten-year-old Tiger Brooks and his neighbor, Luna Lopez, get up-close and personal with Henri Rousseau's 'Tiger in a Tropical Storm' in this action-driven first book in the Fantastic Frame series." -Publishers Weekly "Oliver keeps the plot itself snappy and peppy." -Kirkus