Fairfax County authorities outlined a mysterious series of events leading up to the double homicide as part of a hearing to decide whether a family's au pair.
Juliana Peres Magalhaes, 23, is charged with the murder of Joseph Ryan, 39, who was found shot dead inside the $1million home of the family she worked for in Virginia.
Prosecutors said that the au pair charged in the fatal shooting of a man inside a Fairfax County house visited a shooting range with the husband of the woman who was also stabbed to death inside the Virginia home.