death and the murder charges against chaz higgs, greg augustine set outrs in his father's death. what really happened to his dad, charles? could he have been killed the same way kathy augustine allegedly was? >> any prudent person would have to go through the decision to exhume their father because chaz was his nurse in the hospital. >> three months after kathy died greg had his request honored. police in las vegas exhumed charles augustine's body to see if he also had succinylcholine in his system. greg and the police waited for answers as chaz higgs prepared to stand trial for his wife's murder. >>> coming up -- prosecutors present a possible motive. >> this is a guy that does not care whatsoever about his wife. he hates her. >> but was that enough to commit murder? this is an rc robotic claw. my high school science teacher made me what i am today. our science teacher helped us build it. ♪ now i'm a geologist at chevron, and i get to help science teachers. it has four servo motors and a wireless microcontroller. over the last three years we've put nearl