The hereditary king of Bohemia masquerades as a masked gentleman. A man sees a yellow face in a cottage. A letter arrives inscibed 'K. K. K. ' with five oranges pips enclosed. A maid and a butler disppear after secretly reading a family document. These mysteries are bought to the house on Baker Street where the detective Sherlock Holmes resides. No case is too tricky for the world's most famous sleuth and his incredible powers of deduction. This special edition includes questions and activities to inspire discussion and enhance your reading.