Major questions about NPD

Hi, i'm new here and trying to find out some answers about someone i know who might have NPD. i originally posted on the ASPD forum but they directed me here. when i first me this guy it was through my friend, who is a very social and outgoing guy with a great attitude. the guy i think might have NPD was friends and roommates with him and started acting very strange. he copied things my friend said and did, he'd tell stories where my friend did something positive as if he was the one who did it. if my friend bought a shirt or even a watch, he would go out and buy the exact same thing. after three years in a very difficult architect major this guy switched majors to the same physical fitness major my friend had. the guy was pretty quiet in social situations and sort of awkward at parties. he's not typically a fighter and not super outgoing. his parents brag about their son all the time and give him anything he wants, and when he was younger they never let him miss a day of school from 1st to 12th grade. on one occassion thsi guy's girlfriend asked my friend to pick her and her friend up after work to since her boyfriend couldn't do it and though he didn't want to he eventually did after his own fiancee (who is friends with the girl) finally convinced him since they didn't have another way home. when the guy (possibly with NPD) found out this had happened, his girlfriend said he was extremely angry and jealous of the situation, though he never showed it outwardly to my friend, was just very quiet around him. a short time later my friend and this guy were riding home from college on their motorcycles when my friend suddenly ran off the road and was killed. it looks like, from the evidence that has been found, that this guy deliberately ran my friend off the road in an attempt to harm or kill him. at the scene afterwards this guy spoke with witnesses and told the police things he had heard from them and could not have seen during the accident as if he had seen them. he lied to police and didn't tell them the two bikes made contact (though we later found out they had) and did not call my friend's parents or friends or my friend's fiance who was a mile down the road and is a nurse. she and my friends parents didn't find out until over an hour later that my friend had even been in an accident. afterwards this guy was completely unemotional about his best friend dying right in front of him, he brought up business propositions to my friend's father just days after the funeral (plans that were idenical to ideas my friend had with his father before his death) without bringing up his son's name once. he has told people that my friend's dad offered him $100,000 a year for a job (completely untrue, he hasn't even offered him a job). in his quest to get a job from my friend's father he has asked him to do small tasks and research, which this guy refuses to do. he expects others to do everything for him. he is never appreciative of any of the things they've done for him. he has wanted to be a part of helping my friend's father find out what happened during the accident but when the father suggests things that would really make it look like an accident he dismisses them, almost as if he wants it to not look like an accident. does he maybe want to get caught? he told his friend shortly after the funeral that he was having the best time of his life. this guy's girlfriend said she wanted to visit the gravesite and he snapped at her, saying why would you want to go there. she asked him why he hadn't gone and he said he had with my friend's father plenty of times (also untrue). he has been icnredibly controlling and verbally abusive towards his girlfriend and she has said sometimes he's so angry she doesn't know what he will do. even her grandmother calls him "the whisperer" because he is constnatly whispering things in her ear in front of them so they can't hear. in front of her friends he will tell her under his breath for her to shut up and that she's laughing too loud. she recently broke up with him and he was suddenly very emotional and on the verge of tears (though he is usually completely unemotional). since then he has been very clingy towards his other friends, coming over to their house uninvited and even wanting to spend the night. there is obviously a lot more to the story, but my question is does this sound like NPD? and if so, how would you get an NPD who had committed a crime to admit it and tell the truth? obviously it's really important to the family to find out the truth. i'm sorry the story is so long, any help would be greatly appreciated.