Childhood's End Syfy miniseries

I haven't had a reason to watch anything on the SciFi  Syfy channel for a long time, but when I recently heard the news that a miniseries based on Arthur C Clarke's novel, Childhoods End was being made and was coming to Syfy I found my reason!
December 14th-16th I'll be setting my DVR to record the 6 hour/3 night mini series!
I read the book so many years ago when I was in high school, I vaguely recall the story so  may reread the novel to refresh my memory. I do remember the description of the aliens.....