Shannon Richardson , 35 , initially told FBI her husband sent ricin-tainted letters . ( CNN ) -- But she failed polygraph , and husband said she wanted to end marriage , FBI says . Score: 6 Her husband files for divorce ; she 's also pregnant , divorce lawsuit says .
Shannon Richardson , 35 , initially told FBI her husband sent ricin-tainted letters . But she failed polygraph , and husband said she wanted to end marriage , FBI says . Score: 6 Her husband files for divorce ; she 's also pregnant , divorce lawsuit says .