(NaturalNews) The obvious way to begin an investigation is to look at 
the event itself for any obvious contradictions or unexplained details.
For example, in the Batman murders, we have two witnesses who were in the theater and implied there were accomplices.
One
 witness, Corbin Dates (aka Dayton), told Aurora news outlets a man 
sitting in the front row took a cell phone call and went to a side exit,
 propped the door open with his foot, and seemed to be signaling 
somebody. Ten to 15 minutes later, James Holmes appeared in full gear 
with weapons as the exit door swung open The other witness (no name as 
yet) stated that, during the massacre, a gas canister was thrown from a 
direction where Homes wasn't.