While the concept of demonic possessed children does have a certain sense of dread and horror about it, "Speak No Evil" didn't fully exploit the potential that it had at hand.
The story starts out a bit slow, but quickly picks up pace and gets into gear with lots of things happening. Although a lot is happening, it is not difficult to keep up with the story, because it is done chronologically and in a well-presented manner.
What didn't really work about the movie was that it came off as too shallow, as if the director didn't really delve into the many layers that were made available by the concept of the movie. And as such, the end result was a rather hollow experience at best.
The characters in the movie were fairly one-dimensional and never really got to portray any proper characteristics and that just made you didn't care about the protagonists or anyone else for that matter.
Acting-wise, then "Speak No Evil" was adequate, but the actors and actresses were fairly limited by the script and the direction. Again, the potential wasn't fully taken advantage of here either.
As for the ending. Well, let's just say that it was alright, although is very just oozing with a cliché ending for a horror movie. But the ending worked out well enough for what it was.
The best part of the movie had to be the children. I mean, demonic possessed children running rampart in a small town killing and maiming the inhabitants. And the eyes were actually one of the more interesting things about the entire movie. I liked the thing they had done with the children's eyes.
For a horror movie, then "Speak No Evil" was a fairly poor experience. It wasn't scary, nor was it particularly interesting or appealing.
I am rating the movie a mere 3 out of 10 stars.