The first thing that struck me when I started watching this movie was that some of the scenes early on are very reminiscent of viral video I saw on Facebook one time. Here's the video
Anyway this is going to be a spoiler free short review so I'm not going to go into much more detail about the plot. The movie relies heavily on jump scares which is a little disappointing but there are a few moments which generate some tension and some really clever stuff going on in the climax which made it considerably more entertaining than The Conjuring. It's short of a shame that it went for so many jump scares really because there are a few good scenes where characters are walking around in the dark and your not quite sure where the creature is going to come from. When they did have the monster attack though it was always a loud, screamy affair that just blew all the tension away and just left you feeling like you've been punched in the face.
One thing that did strike me is just the incredibly attractive cast. The main character is played Teresa Palmer who is just crazy hot and even her boyfriend portrayed by Alexander DiPersia was giving me a bit of a man crush. Even the ghost was played by an insanely attractive woman, Alicia Vela Baily, I mean just take a look at her.
Anyway, Lights out won't leave you feeling upset that you spent your precious time watching it but it's nothing special and you'll probably forget about it in a few months. If you want to save yourself the price of a ticket or a DVD then just watch the short on repeat for 2 hours, you'll basically get the same experience.