Closing arguments are expected to begin Friday morning in a Fairfax County murder trial prosecutors say involved catfishing, a fetish website and an affair with a Brazilian au pair. Closing arguments are expected to begin Friday morning in a Fairfax County murder trial prosecutors say involved catfishing, a fetish website and an affair with a Brazilian au pair. Brendan Banfield testified this week in Fairfax County court that he did not devise a plan with the family’s au pair to kill his wife, Christine Banfield, and another man, as prosecutors allege. Banfield testified he came home after getting a call from Magalhães saying a strange man was in the family’s home. Banfield testified that he told Ryan to drop the knife, and Ryan replied by telling him to drop his gun.