I believe Mr. Juhgans and Bil Baird's bat were secret free
Mr. Juggins had the best secret of all . . . who put him up there in the deserted West Wing? Was he a clothes mannequin or a real person turned into a dummy (kind of like Victoria Winters)?
The bat, of course, knows a secret: who he is in mortal form.
And sorry VAM but Buzz Hacket did have a secret. Only he and Carolyn knew what they were out doing at all hours of the night.