reporter: she says alcohol is at the root of a host of problems. let s talk about the inflicted trauma of hazing. let s talk about the sexual sadism, these are things that shouldn t have a place in a formal organized sanctioned college club. reporter: this student left with disturbing claims about hazing and asked we conceal his identity fearing retaliation. the lowest part for me when i was cleaning out the basement filled with dead animals and manure and sometimes human feces, i started failing my classes. i left and that was kind of it. fraternity houses like this are at a heart of a new wave of scandals across the country. some in greek life are trying to clean house. we did alcohol free housing. the culture was dominated by alcohol and that was at the ent he ter of everything we did. reporter: one of the first and oldest national fraternities