john blacstone, cbs news, reno. >>> the elderly man responsible for starting the fire is cooperating with investigators. but it is not clear if he will be facing criminal charges. >>> 12 teenage girls from the same town believe they contracted a mysterious illness. they started showing symptoms like terex. no agents were the cause, parents think the state's testing was not complete enough. they are also not satisfied with the opinion of a doctor who examined all of the girlless. he says it's a conflict which resulted in mass hysteria. his prognosis is for a complete recovery. >>> a man is recovering after a terrible accident involving a nail gun. the result is a 12-inch nail in dante's head. tragedy was averted by just a few millimeters. >>> former kidnapping victim elizabeth smart is now engaged. the 24-year-old will likely get married this summer. smart was abducted from her home when she was 14. she was rescued nine months later. bryan david mitchell was convicted of kidnapping and sexual assault. no details were released about smart's husband to be. >>> she was one of the pioneer