FAIRFAX, Va. (FlashPoint) — A Brazilian au pair, Juliana Peres Magalhães, testifying in a high-profile double homicide case, revealed intricate details of a plot to murder her former employer's wife. Brendan Banfield is facing aggravated murder charges in connection with the deaths of Christine Banfield and Joseph Ryan, whom they allegedly killed in an elaborate scheme. Magalhães, who initially faced murder charges herself, pleaded guilty to manslaughter as part of a deal for her cooperation with authorities.

During her testimony, Magalhães described how she and Banfield impersonated Christine Banfield on social media to lure Ryan into a trap, ultimately leading to their deaths. She detailed feeling hopeless and overwhelmed during her ordeal, as letters she wrote from jail revealed her struggles.

Banfield, an IRS agent who maintains his innocence, could face life in prison if convicted. He is further charged with child abuse and felony child cruelty relating to the case, putting his four-year-old daughter directly in line with the allegedly violent circumstances.

Magalhães's testimony has fueled public interest in the courtroom and raised questions about the lengths individuals will go to in desperate situations. The case continues to unfold as Banfield faces trial.