I saw a screening of The Darkest Hour (Summit Entertainment) last night. It’s a sci-fi movie about a bunch of invisible aliens invading Earth. Bottom line: the film looked promising when the aliens invaded within the first 15 minutes of the story. But then the movie became predictable and there was very little suspense. If you want to see a recent movie about aliens invading Earth, you’re better off watching Cowboys & Aliens on DVD. The Darkest Hour opens on Christmas day. The 89-minute movie is rated PG-13 for violence and language.