rickerson by his head and snapped his neck in front of me. >> reporter: matt worked for rickerson andired for poor performance,ing weeks before his murder according to trial. erik jenson knew richard matt and david sweat with. he served nine months in clinton correctional facility in 2007 for possession of stolen property. he worked this the tailor shop with both fugitives and described matt as crazy. >> to chop somebody up in to pieces and you know, put him in to plastic bags and throw him in different parts of a river in my book that's kind of crazy. it is weird, the aura you get from talking to somebody. you could look at rich's eyes and you wouldn't see anything. >> blank stare. >> blank stare. >> reporter: that was creepy i would imagine. >> very creepy. >> reporter: given richard matt's ugly past, jensen said he never turned his back on him. >> he had a weirdo crime. weirdo crimes are child molesters, serial killers, dismemberers, people who do weird crimes. and do weird thing. >> reporter: a weirdo crime means you are not stable. >> correct, correct. >> reporter: after matt kil

rickerson by his head and snapped his neck in front of me. >> matt works for rickerson and was firedce weeks before rickerson's murder, according to testimony at trial. eric jensen knew both richard matt and david sweat. he served nine months in clinton correctional facility in 2011 for possession of stolen property. he worked in the tailor shop with both fugitives and described matt as crazy. >> to chop somebody up into pieces and put him into plastic bags and throw him in different parts of a river is in my book, that's kind of crazy. the aura you get from talking to somebody. you can look at rich's eyes and you wonderful see anything behind them. >> blank stare? >> blank stare. >> that was creepy. >> it was creepy. >> given richard matt's ugly past, jensen said he never turned his back on him. >> he had weirdo crime. like child molesters, serial killers, dismemberers, people who do weird crimes and do weird things. >> a weirdo crime means you're not stable. >> correct. >> after matt killed his former boss, his half brother testified in court that matt told him he used a hacksaw to

soon, ricky convinced him to join in a plot to rob william rickerson, a local businessman who'd madeistake of briefly giving matt a job. like many of matt's criminal enterprises, what the plan lacked in sophistication, it made up for in brutality. >> reporter: mr. rickerson looked up at rick, and rick turned around and punched him right in the face. >> reporter: bates says matt tortured the 76-year-old man, sticking a knife-sharpener into his ear at one point. then locked him in a car trunk, and drove aimlessly for 27 hours. >> at different points, he had me pull over. i'd have to get out of the car with him. he'd open the trunk. he would beat mr. rickerson. >> reporter: each time they opened the trunk, it got worse. >> he snapped his fingers all the way back, and grabbing ahold of his head and snapping it, there was a pop. >> you don't tell richard matt he can't have what he wants. >> reporter: matt dismembered the body and threw it in a river. after all that, the big score? some rings, a couple of credit cards, and not even $100 in cash. meantime, about 200 miles away near binghamt