Mr. McGuire takes Maggie, Raphael, Fiona, and Hasenpfeffer to Scotland to meet one of his oldest friends, Sir Roderick Lachlan, who will conduct Maggieās World Federation of Magic testing. Also at the estate are smarmy young house guestāMunro Wallace Shaw, his mentorāLord Gilroy Innis, Sir Lachlanās 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 Rhonaāa troubled child at odds with her selkie heritage. When a panther attacks their host, Maggie and friends must figure out who conjured the creature up and why. Add a sneaky black cat, Maggie and Fionaās troublesome attraction to Munro, and Raphaelās jealousy to the mix, and the next victim might very well be Maggie.