The solitaire mystery

The Solitaire Mystery Twelve-year-old Hans Thomas and his father are on a journey to Greece in search of the boy's mother when a series of unusual incidents occurs: a dwarf gives Hans Thomas a magnifying glass; a baker gives him a bun containing a miniature book that tells the story of a sailor shipwrecked on a desert island; a pack of playing cards seems to have a life on its own; and what of the Joker who looks too deeply and too much?