Bertie meets the Cthulhu Myth

You guys know The League of Extraordinary Gentlemen? The book that takes old English and American novels and crosses them over in an eerie way?

This is the Jeeves & Wooster part of it.

One of the Great Old Ones (extraterrestrial, brain-napping sort of chap), visits aunt Dahlia at Brinkley Court and tries to steal Bertie's brain.