This is my favorite of Mistry's offerings so far. She's a very efficient writer, able to develop the creepy and suspiciously damp old house, the mysterious butler and general malaise very quickly, though the effect feels anything but rushed. The story moves at an excellent pace with time allowed to work up plenty of suspense. The climax (ha ha) when you reach it is as crazy and over-the-top as readers of this genre demand.
As always the pricing is a sore point: $3.99 for 25 pages. It adds a layer of frustration and dissatisfaction that wouldn't be there otherwise. But for those times when you're feeling profligate and in desperate need of squirmy tentacles, this is your book.