Polly Klaas ' father joins search for teen . Polly Johnson , 18 , has been missing since January . Her mother 's boyfriend is the subject of the investigation . For the latest from Nancy Grace click here . Both mother , boyfriend have failed drug tests .
Polly Klaas ' father joins search for teen . Polly Johnson , 18 , has been missing since January . Her mother 's boyfriend is the subject of the investigation . Both mother , boyfriend have failed drug tests .