ricin tainted letters to president obama and two other officials. authorities initially charged and then cleared another mississippi man in the case. anderson, check this out. san diego's kgtv got a rare look inside a drug smuggling tunnel in tijuana, mexico. it was discovered back in february before it was completed. 17 people were arrested. the u.s. border is just four blocks from the warehouse where the tunnel begins. according to a report it had an elevator, electricity, and a rail system. >> it's amazing. i've been in a couple of those tunnels. they're extraordinarily complex. up next, amanda noiknox speaking out. susan page from "usa today" spent hours with her. she joins us to talk about her in depth interview next. çñ