i'm elizabeth vargas. >> and i'm david muir. thanks. watching.t at the oakland coliseum. the

. >> and i'm elizabeth vargas. and this is "20/20." >> i'm an interesting person, i'm a controversial person, but most importantly i'm an unconventional person. >> reporter: self confident self-help guru keith raniere is all those things and more. >> consumer's byline is wonderful. >> reporter: tonight he is also an alleged criminal. the man known as vanguard, busted by the federales in mexico in march, his luxury hideout, according to authorities, was a $10,000-a-week villa in puerto vallarta, shared with several women. this video of the arrest, apparently was shot and shared by followers, and then leaked online. >> if you're trying to avoid the u.s. authorities, you don't go to mexico because you hope the mexican government's going to protect you. you go to mexico because you hope to get lost. >> reporter: lost, and found. raniere brought back to new york to face federal charges including sex trafficking. >> we're going to begin with the leader of a self-help group. >> raniere is expected to be in brooklyn. >> re

i'm david muir. >> i'm elizabeth vargas.0/20", have a good night and a great weekend. >>> syria is under attack tonight. tonight. next the my name is cynthia haynes tonight. next the and i am a senior public safety specialist for pg&e. my job is to help educate our first responders on how to deal with natural gas and electric emergencies. everyday when we go to work we want everyone to work safely and come home safely. i live right here in auburn, i absolutely love this community. once i moved here i didn't want to live anywhere else. i love that people in this community are willing to come together to make a difference for other people's lives. together, we're building a better california.

i'm elizabeth vargas. >>> rain and wind taking a toll in the east bay tonight. >> giant tree

. >> and elizabeth vargas will do some investigative documentaries for a and e and we're happy for youstill here? i'm still here. >>> so, start us off. allison mack, the story involving her. >> that's right, she's been charged with sex trafficking for her alleged role in that self-help group learning she is working on a plea deal and may be cooperating with prosecutors. she is due in court today. >> take my hand. >> reporter: she's the actress best known for playing a young superman's best friend on "smallville." >> i can explain later. i did what i had to do. >> reporter: but this morning, allison mack is due in court facing sex trafficking charges after being accused of involvement in helping to recruit women as alleged sex slaves for a secret sorority within an organization called nxivm based out of albany, new york. mack gave a testimonial for the group. >> when i first came i had on the surface something that seemed to be like the perfect life for a pretty good life. >> reporter: keith raniere, the leader of nxivm, is facing charges including sex trafficking and forced labor consp