Remember that Bruce Wayne a.k.a The Batman had a mentor long time ago, before the same mentor turned bad and died in the hands of our dark hero? Well turns out in the new title of the bat hero, he 'returns' in a younger form.
Quotes from Screen Junkies
"Though the plot of the film remains under wraps, Pence’s role clearly indicates that Ra’s Al Ghul, Batman’s mentor-turned nemesis who died in Batman Begins, isn’t entirely out of the picture quite yet. "
A flashback, perhaps? It sure is.