Every picture has a story behind it - but some have more to tell than others. That's the case in the video below, in which ten mysterious photographs from the past century are examined. Each picture has a number of stories and theories attached to it, but none have been proven true. You may recognize some of the pictures, as they've been floating around the internet for as long as it's existed. 

Perhaps the most intriguing story here is that of Elisa Lam, a 21-year-old student who went missing while on vacation in Los Angeles. She was last seen in elevator surveillance footage on February 1st, 2013, behaving very strangely. She was missing for nearly a month before her body was found in a water tank on top of the Cecil Hotel. Some people speculated that Lam had been using drugs or was being stalked, but to this day no one knows what actually happened. 

What do you think happened to Elisa Lam? Do you have an explanation for any of these photos? Sound off in the comments section below or on our Facebook page. If you were intrigued by the video like we were, be sure to share it with your family and friends!