A 42-year-old Florida man pleaded guilty on Friday, Aug. 7, to killing his wife and her two young daughters more than ten years after their deaths. Alberto Sierra entered the guilty plea in a Miami-Dade County courtroom to charges including first-degree murder, burglary, kidnapping, and abuse of a h uman corpse. The charges stem from the […] Florida Man Pleads Guilty To 2012 Murders Of Wife And Two Stepdaughters ...read more read less