Fablehaven by Brandon Mull

It always occurred to me that fairy and folk tales are filled with some really nasty critters and that the bulk of them seem out to kill humans. The ones that aren't overtly hostile tend to be neutral at best. Many of the ones that are benign are easy to offend to disastrous effect. As cool as they are, I'm not sure I would ever really want to meet one. They are too sinister as a whole.

Even though this is true, there's a ton of fey folk popping up in literature and so much of the time they come across as benign or even silly.

In the world of Fabelhaven the world's fairies aren't fictions, they are endangered creatures, so certain humans gather them up in preserves. Seth and Kendra's grandfather is one of these people which is something neither children nor their parents realize when they are dropped off for some quality time with the grandparents. These are not benign or silly versions of the fairy tale world. These critters are dangerous or even deadly. Being the guardian of such a preserve doesn't guarantee the good will of the inhabitants.

Both kids quickly realize something is strange about the house and grounds. Grandma is missing and there are a lot of strange rules. Kendra is inclined to follow the rules, but Seth is more curious and reckless. When the rules get broken, a powerful evil force is unleashed and the kids have to find a way to fix it on their own.

So, this is cute. I picked it up because two of my big readers swore by the series. I don't think it's destined to be my next favorite series, but I do plan to finish reading through the five book run.