A classic children's adventure of icy seas and cold-blooded pirates, wolves, mermaids and the bravery of one girl determined to save her sister The cold bites and the sea lashes in this page-turning adventure on the ice seas. No one but ten-year-old Siri dares to face treacherous sailors, hungry wolves and the arctic winter to save her younger sister from the dreaded Captain Whitehead and his ice sea pirates.