The Watcher is a well written YA tale of eternal love, redemption and impossible romances. 17 yr old student, Mia Crawford is your typical HS senior until a trip to the park changes everything. The story features a love triangle, lots of tension, emotion, suspense, a rich history, and strong characterizations. While I think the main theme of the story has been done before, the author gives the tale enough twists and turns to keep the reader from feeling they have seen this all before -- just with different characters.I'm not one for spoilers in reviews, so I wont rehash the story or plot, but I will say I was drawn into the story from the beginning and Ms Voisin did an excellent job of keeping me there until reaching the end. I never felt the story line was predictable or felt I knew what was coming before it did -- something that I come across a lot when reading YA stories. That was a nice change for me.Even the secondary characters felt real and well defined. I would have like to "Like" Michael a bit better, but for me at least, he was a bit annoying in that he was forever sending Mia mixed signals that at some points made me want to reach into the book and throttle him. That being said, he did get me to react emotionally -- which I can appreciate because it means despite his flaws, he was a nicely complex character.I'm giving this 4 stars because of the Michael annoyance factor and because I would have liked to see some of the ancient lore referenced in the tale to be a bit more fleshed out and a bigger part of the overall story.I would highly recommend this story to any YA romance fans and anyone who enjoys a good Angels and Demons tale. Looking forward to checking out more work by this author.