I was looking for something to watch that wouldn't require too much thought, something quick and fun, nothing too complicated. When I saw the 3/10 rating on IMDb, I almost didn't watch the movie. In the end, I still did, and I'm glad I did. It was nothing special, but I wanted to be entertained, and that's exactly what the movie did. Nothing less, nothing more.
As other people have mentioned, the movie is like a cross between Nancy Drew and a Goosebump episode. It's filmed cheaply, with unknown actors that don't deliver any ground-breaking performances, but the script is well put together and interesting. The intrigue is surprisingly captivating, and there are no slow parts, resulting in a fast-paced movie where you don't really have time to be bored or annoyed.
The 'horror' parts of the movie are extremely cliché, and somewhat funny because they fail to surprise, but for younger kids this is just enough, more would be too much. Everything falls into place a bit too easily during the movie and the ending is ridiculous, but until that point the unfolding of the story is great, if kept in mind that this is a thriller/mystery for children. The ending supposes there will be a continuation, and I do hope so.
It's fun to watch, just don't expect more than it is.