Police received a call from Darlie Routier one morning telling them of her two sons' murders. However, police were unsure about the validity of Darlie's story and began an intensive search of the crime seen. The police determined the killer by analyzing blood spatter, doing behavioral profiling and analyzing Darlie's 911 call. The evidence proved that Darlie killed her two oldest sons with a knife, inflicted wounds on herself, cleaned the evidence and created a story of a crazed intruder who had come in the house. Darlie's motive was to obtain the $5,000 each of her sons had in a bank account. (thetvdb.com)