>> because is trying to build a reputation with this certain group of individuals. >> finally, protsman said he also murdered a motorcycle officer in the 1970s. >> that was the very first one i ever did. i ran him off the road with my truck. >> why? >> because he wanted me to flip for him. he wanted me to flip against the gang with him. >> while protsman offered specifics about the officer he says he killed, homicide detectives who investigated the case said they could not link him to the officer's death and concluded it was due to an accident. >> these are all true stories, huh? >> yep. >> okay. >> became a habit, i think. i kind of think that if i wouldn't have got the life sentence, if i got out again, i'd probably kill again.