, maybe because there are so many john mcafees. >> john mcafee is one of the wildest characters you'll ever come across. >> the >> reporter: there's mcafee the party animal. >> john? >> reporter: mcafee, the silicon valley gazillionaire. >> he's someone that i feel is dangerous. >> reporter: even mcagree the presidential candidate. >> stand with me to protect our freedom. >> reporter: pinning down the truth in mcagree's life story is never easy, because often, it is as slippery as he is. >> he is like teflon, nothing sticks to the man. >> reporter: if the name mcagree rings a bell, it should. there's a good chance it's on your home computer screen right now. yep, he's the guy behind the famous mcagree anti-virus software. we say we're going to talk tomorrow, does that mean face to face? i first crossed paths with mcagree in 2012 when he'd become even more famous south of the border. he was on the run and would only talk to me by phone. >> you may think that you're not being followed, but i can assure you you are. >> reporter: hello? but i wasn't chasing him around late m latin america