Very well-done game with a combination of point-and-click adventure aspects and hidden object/puzzles. Compared to some, this game focuses more on the puzzles and less on HO scenes.
The story was engagingly creepy and while not entirely original, was entertaining. The back story was fairly formulaic but as it's fed to the player in small bits, via diary entries mostly, the somewhat predictable history of the villain did not detract from the story. What helped this is that the game didn't bonk you in the head with information about the villain; to some extent you have to imagine the events leading up to the events of the game and to me, at least, that makes it more mysterious and creepy. The villain manages to be both over-the-top psycho and creepy. It's a combination that doesn't always work, but it does here. It helps that the voice acting isn't terrible (a curse that many of these games have).
Minigame puzzles were generally challenging without being obnoxious or illogical; only a couple were somewhat tedious. There is a convenient skip button for people that are stuck (or impatient).
Hidden object scenes were not overly challenging but did take some thought. Graphically, scenes weren't grainy and it wasn't hard to distinguish objects from one another. Objects are appropriately named (no searching for a "soccer ball" that turns out to be a volleyball, etc.).
All in all, this is one of the better choices for this genre of game.