.>> reporter: in 2013, event 34- year-old carlos hillen that he had it all. a wife, two kids he adored, and his dream house in his hometown of mesa, arizona. >> i felt like everything was falling into place. >> reporter: but within a few months, that perfect life would time, police think that carlos hillen would be known tonight for murder. >> for me, it was like standing on a cliff. >> reporter: going from family man to a suspect, accused of plotting to kill his wife and her boyfriend in a murder- suicide. police dubbed him a would be copycat killer. >> michael sanders was a father and a husband. >> reporter: claiming he was inspired by a horrific murder- suicide a week earlier where a man killed his family and that their house on fire. > killings. >> reporter: but tonight carlos hillen says that was never the case. >> i was not even watching the news. i was living out of a car. >> reporter: for the very first time, he is sharing his story in hopes of saving others from going down the same dark path he did. >> just take a step back and look at reality. >> re