The show is based on a book by the same name, which is all kinds of supernatural crazy. It's awesome if you're interested.
The show, on the other hand, seems to want to stay relatively grounded in reality, and as a result, I guess they had to rework A LOT of the source material. As a result, it's nothing like the novel, so if that's why you want to watch the show, just be prepared. They're the same in name and characters only. Hell, some of the characters don't even have the same powers they do in the novel.
As a show, though, it's not bad. I couldn't make myself like the lead, however. She just wasn't intriguing or interesting enough for me to care about whether or not she gets her memories back. Genuinely didn't care. I watched it more for the background characters, but obviously they were mostly pushed aside for the lead.
It's an okay show if you're looking for something to watch in a block. I couldn't imagine having to sit back and wait a week for each episode. It definitely wasn't interesting enough for me to do that.
Still, why not? I liked it ell enough, so maybe you will, too.