A priceless golden chalice has been stolen from Fergus McSwaggers, fearsome chief of the squelchy Bog Islands ... and he wants it back! Can Flynn and the crew of the Black Hound solve their most dangerous case yet, battling deadly ice pirates, outsmarting squabbling clans, and facing the scariest beast of all the Seven Seas, the monstrous, cat-like Mogdrod? The second in the exciting Flyntlock Bones detective adventure series, this is a humorous book for both boys and girls, and it's packed with quirky black and white illustrations which really make the story come alive!