The evil magicians called the Mesmers are still plotting to take over the world, and the Kennewicketts, recently recruited into the spy business by President Roosevelt, are at the center of the battle for world domination. Now the Amazing Automated Inn has been compromised: someone is smuggling secrets out of the lab and selling them to unscrupulous sorts in Italy. Worse, their friend Nikola Tesla's latest invention--a device that will provide a limitless...