Mr. McGuire takes Maggie, Raphael, Fiona, and Hasenpfeffer to Scotland to meet one of his oldest friends, Sir Roderick Lachlan, who will conduct Maggie's World Federation of Magic testing. Also at the estate are smarmy young house guest--Munro Wallace Shaw, his mentor--Lord Gilroy Innis, Sir Lachlan's wife, Lyra, a depressed selkie who endlessly searches the castle for her hidden seal skin so she can escape back to the sea, and their daughter Rhona--a...