The video is one of the only clues as to the alleged killer's behavior in the days surrounding his daughters' murders ...

It's been over a month since Travis Decker went on the run after allegedly killing his three young daughters in Washington ...

Video released by police shows Travis Decker, the father accused of killing his three daughters, just three days before he picked up his kids and never returned.

Police have been searching for Travis Decker since June, after his three young daughters were found dead at a campsite.

Olivia, Evelyn and Paityn went missing in Washington after being picked up by Travis Decker for a planned custody visit.