Parents need to know that this documentary series deals with conspiracy theories, presenting evidence from all sides of a given subject and using experiments to help support or undermine it. When the subject matter calls for it -- as in an episode about the crash of TWA Flight 800 -- computer graphics re-create explosions and fires, and video footage of mangled wreckage is shown. Discussions of government cover-ups and conspiracies are at the heart of the series, and kids may need some help deciphering fact from theory. Because the series covers such a wide range of topics, parents may want to scan episode listings before giving tweens the go-ahead.
Positive messages:Demonstrates how new advances in science can help solve long-standing mysteries.
Violence:Computer-generated images and experiments can include explosions and fires, and video footage includes shots of wreckage from crashes.
I didn't rate this iffy for ages 12-13 because of the content, I rated it iffy for ages 12-13 mainly because it may be hard for children to fully understand the content in this show. I think most 12 year olds and older could handle the show based on content, though.