Get ready for another Chris Hansen hidden camera classic! And this time, you can take part. It's all about how our eyes can play tricks on us, whether we realize it or not.
Like the picture you're seeing right now – look closely. What is it, really? Probably not what you're thinking! Find out Friday, and test yourself: How observant are you? Our eyes aren't always as reliable as we think.
Join Chris Hansen for "Did You See That?!" – a special Dateline Friday, at 10/9 Central.