Theatrical producer Spencer Lockridge is producing a play based on one of Ellery's books and has invited Ellery down to his mansion for the week-end. Upon arriving at the Lockridge home, Ellery finds his host dressed as the Mad Hatter and the host's wife and guests are dressed as other characters from Alice in Wonderland and Through the Looking Glass. They are rehearsing a play to amuse Lockridge's young nephew for his birthday the following day. In the night, Spencer Lockridge disappears - did he leave on his own, was he kidnapped or was he murdered? Great guest cast especially Jim Backus, Rhonda Fleming, and Larry Hagman. But the episode falls a bit flat and it has an annoying kid in it. For one thing, David Wayne as Inspector Queen is just in a couple of scenes and Tom Reese as Sgt. Velie has only about one line at the end of the show. Jim Hutton is just not engaging enough to carry the show by himself - he needs Wayne and to a lesser extent, Reese. Also, this show doesn't have s sufficient late 1940s feel to it as do other episodes such as the ones with radio show backgrounds or set in a comic book office. Still entertaining but not one of the best episodes.