DC All Access is back with another cool video, this time they go over the top ten unsolved mysteries in the DC Universe.
Topics include Superman and his New 52 counterpart, the Time Trapper, Commissioner Gordon, the identity of the Joker and more.
You know that Batman's parents were shot by Joe Chill, Clark Kent and Superman are one and the same, and that Doctor Manhattan had something to do with the events of Rebirth. But before you think you have it all figured out, let's examine some of the DC Universe's biggest unsolved mysteries. So what do YOU think is beyond the Source Wall?
