Starts well, sags in the middle, and kind of loses its way towards the end. As far as Wells' books go, this is not one of his best, but still worth reading.
As one reviewer points out, this is senseless. I'd go further to say it's unadulterated rubbish. Word-painting and nothing more. Void and avoid.
Neat little pulp sci-fi, but weakened by having the horror (as one reviewer points out) done off-stage. Would liked to have seen that part in the story. Let down by poor writing, and the dialogue is stilted in places, but still a good read. Nice little twist that adds a chill at the end.
I enjoyed this for it's tongue-in-cheek humour and the ending made me smile.