Shannon Richardson gets 18 years in prison , must pay $ 367,000 in restitution . Texas actress had minor roles in `` The Walking Dead '' and `` The Vampire Diaries '' Richardson mailed ricin-laced letters to President Obama and Michael Bloomberg . He filed for divorce in June 2013 , and court papers indicated that Shannon Richardson was pregnant . April 2013 : A man is arrested for mailing a letter containing the poison ricin.
Shannon Richardson gets 18 years in prison , must pay $ 367,000 in restitution . Texas actress had minor roles in `` The Walking Dead '' and `` The Vampire Diaries '' Richardson mailed ricin-laced letters to President Obama and Michael Bloomberg . April 2013 : A man is arrested for mailing a letter containing the poison ricin.