tom stankiewicz: yeah, and mechanical timers that-- that are the device. then you have the distractions that are laid in there. track 408 the device was filled with things that were meant to confuse -- this cell phone is a toy... connected to nothing. and some of the warning labels were phony. but it was lethal, with compressed black powder sifted from shotgun shells. stankiewicz's model was built to the exact specifications of the original... down to the make and model of the household items used. this digital timer was designed to sound a warning beep beep in the seconds before the bomb exploded. >> yeah, so that's what you're hearing right there. >> gives me chills. makes me want to get away from this thing as i hear it. >> yeah, absolutely. >> the bomb was the work of someone with machine shop skills. and, clearly, a devious mind. the original bomb parts were sent to the fbi lab in quantico, virginia. the scavenger hunt notes, meanwhile, were delivered to fbi behavioral profilers. think the hannibal lecter unit. >> you bring your case and you -- talk a