Arabella doesn't like to give anybody her name, but knows everybody's name, since that gives her an upper hand. She is also no less quick-witted than Milrose, but unlike Milrose, she fits better with the artists on the second floor than the scientists on third (which is probably the only thing which makes Milrose jealous of the epic poet, Poisoned Percy). Oh, not to forget, she is helping a flower which is the last member of its species (and hence trying hard to be a flower).
With these two to be Helped, any Professional would have his hands full. But Massimo Natica, with his unorthodox ways and the power of making people make what he wants, is definitely the man for the job. Although he does not use crude traditional ways like strait-jackets and cattle-prods, his Den is full of such antiques. And his record speaks for itself when it comes to "Helping" students and people.
The ghostly horde we meet has accepted their deaths, and indeed find the causes to be full of humour. And they are mostly harmless, unless of course, you count the "epic poem" of Poisoned Percy on "Indigestion". But they rise wonderfully to the cause of their friends, overcoming their fears, and broadening their knowledge. With a timorous jockey and an explosion-deplosion specialist at the front, they are really a force to reckon with, even for The Exorcist (considered the Mother of All Exorcists).
All in all, even though Milrose Munce and the Den of Professional Help comes under Juvenile Fiction, I would recommend not giving the book to your kids until they know about science, for the book will definitely give them some ideas. Once they know about the dangers of science, this book will be a laugh-riot, not to mention a tale about how you are not supposed to be pondering two birthmarks at the same time, and how the names should be "balanced". Not to mention, how you should respect your teachers when they make witty remarks, and how you do reap what you sow.
Oh, and before you ask... Yes, the person smiling to himself in the coffee shop last week was me. And yes, the reason was this book.