Old movie mystery: Calling on the past?

Caught on tape: Potential proof that time travel is possible?

At least, that's what foreign film maker George Clark figures is the only explanation for what he noticed while viewing footage reportedly filmed outside the movie premiere of Charlie Chaplin's "The Circus" in 1928.  Now, it's all the buzz on You Tube.

KSLA News 12's Doug Warner unravels this pre-Halloween mystery.