Common Sense Note
Parents need to know that Red Lights is a thriller about paranormal researchers investigating a famous psychic who may or may not be legit. It has some horror elements and some scary stuff, as well as fighting, arguing, a little blood and gore, and characters dying. And there's a general uneasy, tense feeling throughout the movie. Language is the other major issue, with strong words like "f--k" and "s--t" (though they're used relatively infrequently). An older character is seen popping unidentified prescription pills.
Two central characters seem to be on the verge of some sexual tension, but it doesn't go anywhere.
Some violent and/or disturbing paranormal events, such as angry "ghosts" shaking the furniture, birds suddenly smashing into windows, or lights exploding. There are also some scary sequences, such as nightmares. Main characters die. There's a bloody fistfight in a bathroom. Some blood and gore is shown. Graphic photos are seen. Characters often argue or engage in tense discussions. A character performs a gruesome magic trick that makes it look as if he has pierced his bottom lip with a pen.
Language isn't constant but includes words such as "f--k," "s--t," "crap," and "ass," plus "oh God" and "Jesus Christ" (as exclamations).
Red Lights' main theme is the idea of faith: whether or not to believe in something despite the absence of proof. It doesn't necessarily comment upon this positively or negatively, but it does suggest that people who do offer proof are frauds and are only negating the very concept of "faith." On a subtler level, the movie is about belonging.
Drugs / Tobacco /
One character is seen popping some kind of prescription pills.