Probably it's because I was reading sporadically instead of taking it all in one shot, but I didn't find this book all that scary. There were some elements that could certainly be frightening in the right atmosphere, but the writing style really is better suited to reading aloud--or a much shorter story--and tended to make it more difficult for me to find that right atmosphere for fully appreciating Threshold.

Now that I'm used to the writing style I'll probably try to read it again at some point to get a better opinion.