Juliana Peres Magalhães, a Brazilian former au pair, was a central figure in a sensational 2023 double-murder case in Northern Virginia, where she participated in a plot with her employer and lover, Brendan Banfield, to kill his wife, Christine Banfield. The pair orchestrated an elaborate scheme using a fetish website to lure a stranger, Joseph Ryan, to the family's home, where they fatally shot and stabbed him and Christine while attempting to stage the scene as a home invasion.