I have some mixed feelings about this Robin Cook book, as in some ways it was most refreshing to read one of his novels and find that the story wasn't purely centred around hospitals and medial procedure and that this time he had tried to broaden the book's range by introducing some historical background to it; namely the Salem Witch trials of the 17th century.
On the negative side though, in many respects this book was quite disappointing in the almost comic-like characteristics of the people in it. Because the plot demanded that the characters changed personalities during the story, the dialogue and actions that Mr Cook has the characters perform to demonstrate the changes are extremely blatant and about as subtle as a kick in the teeth.
I also disliked the method he employed to move the story about the research Kim is doing into her ultimate grandmother along. Basically everytime the plot requires this element to proceed; Kim magically discovers another letter or document amongst the thousands of tons of paperwork in the attic or cellar. This factor just became boring and tedious and smelt more than a little of lazy writing.
That all said, I did basically enjoy the book, and rattled through it in a weekend as it is a read where you find you must discover what is going to happen next, and it should cause the dedicated reader more than a couple of late nights.
Not the best I've read by Robin Cook by a long way, but a nice change from his normal formula.