Prosecutors say Brendan Banfield concocted an elaborate scheme to kill his wife, Christine Banfield, and another man, Joseph Ryan, in their family home in February 2023. In his testimony on Wednesday, Banfield acknowledged the affair with the au pair, Juliana Peres Magalhães and said it began in August 2022. Peres Magalhães called him while he was using the restroom at the fast food restaurant, Banfield testified. Banfield testified that he does not know the password to his wife’s laptop and never accessed it without her. “Her phone was basically always connected to her, it wasn’t really away from her basically ever,” Banfield testified.