Is it that good? It looked really cool but I wasn't sure if it would be all that.
It's very good if you like a story-driven, dark game. It's very depressing in its tone, so if that's not your thing, then don't bother. Great graphics, good characters, suspense, cliffhanger who-done-it kind of mystery. I sure as heck didn't see most of what happened coming and that's probably why I liked it. It kept me guessing.
It's also not appropriate for children, so if that's an issue, make sure they're not around as it's very much an adult game. It's short (maybe 10-15 hrs), so renting it might be a better idea as it lacks replay value once you're done. It's also a "movie-like" game, so it's not traditional gameplay really, more of doing a series of tasks and then "watching" most of the game, also avoid if you're not into that kind of gameplay.