Originally Posted by Godzilla2014
I have always thought it was lame to make Joker to be the Waynes' killer.
However I thought that maybe this is left to our interpretations. Perhaps Jack may or may not be the killer.
This is because it's all in Bruce's head, it's all in memories and flashbacks.
Keaton's Bruce Wayne is so psychotic that maybe his mind is playing tricks on him. He's subconsciously PROJECTING Jack's face onto the shadowy figure that he met a life time ago.
It could have been a different Jack, it could have been anybody. Associating the two, the Killer and the Joker, just made his job easier because he finds more devotion.
This confusion in regards to whether or not Jack killed his folks, or if it's Bruce just going mental, makes Keaton's take truly "mysterious".