in california has just pleaded not guilty. after he plea, the judge sent alex tichelman back behind bars. not only is she accused in the heroin death of hayes, a married father of five, but investigators are also looking into whether she's involved in the death of an atlanta nightclub owner. he played in a band known for its sexually explicit lyrics. he died at his home just two months before the google executive. alex, the alleged prostitute, was there at the time. one of her former band mates told the cnn affiliate his friend would never use heroin or any other drugs. he suspected something much more sinister is at play. >> there's no way that guy did heroin, no freakin' way. if she got him drunk, she probably dosed him up and he freakin' died. and he was in no way, shape or form any kind of user of heroin or drugs or anything.