A Note on Hilary Mantel's "Beyond Black"

I first heard about Beyond Black from "A Good Read podcast," where two of the guests didn't like the book, With all the great criticism accrued to Mantel in recent years, my curiosity was piqued. Here's my very short take from Goodreads:

Starts off like a house on fire, but slows up in the middle, comes back with an exciting ending. Putting together an over weight psychic and her rail thin officious aide, mistaken for a lesbian couple trying to come to terms with a variety of evil spirits, is something quite different for the author of "Wolf Hall."