Ashlander Darrell Kastin's new novel, "Undiscovered Island," uses a mix of reality and magic to explore ancient Portuguese myth in a setting of the seldom-publicized Azores Islands, his ancestral homeland.The deftly written and attractively packaged 410-page work quickly pulls you into the mysteries of a worried young woman searching for her disappeared father (a writer) amid the strange appearance of a new island in the Azores, which are nine islands some 900 miles away from their mother country of Portugal.