Poison Heart is an intriguing and thrilling psychological novel. It's a very compelling story, filled with a nice balance of tension and suspense, which certainly grabs your attention. The plot in my opinion is a good old classic, but Poison Heart is written in a way so you can't always predict what the next thing will be.
In addition I found two of the characters' name to throw my mind around a bit - Merlin and Genevieve - which made me think that this was going to remake of the Arthurian legend, or something similar to them. But Poison Heart is nowhere close to being alike the Arthurian legend.
I found Poison Heart to be a joy to read, and I would definitely recommend this to others!