pelley: good evening, the f.b.i. tells us that in any given year as many as 300 children under the age of five are murdered by a parent that s nearly one everyday. but when a mother in florida was accused of murdering her two- year-old daughter, that one case became a sensation on cable television. it seemed everyone had an opinion. but in the only opinion that matters, a jury in orlando today found casey anthony not guilty, convicting her only on four relatively minor charges of lying to the police. troy roberts is at the courthouse. reporter: good evening scott. the moments leading up to the reading of the verdict today were incredibly tense, especially for the 25-year-old defendant, casey anthony. a jury of your peers having found you not guilty of murder in the first degree. reporter: the verdict caused an immediate and emotional response from 25-year-old casey anthony and her defense team and left prosecutors stunned. on the seven charges before the jury, anthon