Texas Ricin Suspect Who Tried to Frame Husband Cuts a Deal after failed polygraph

Shannon Richardson told investigators that she had found small, brown beans with white speckles -- a description matching the key ingredient in ricin, castor beans -- at the couple's home in New Boston. She also told investigators that she had found a sticky note on her husband's desk with addresses for Bloomberg and Obama, the FBI affidavit said.

She failed a polygraph test and investigators found inconsistencies in her story, according to the affidavit.