Watch: Garth Brooks Hopes to Move His Sexual Assault Case to Federal CourtDavid Del Rio's wife Katherine Del Rio is speaking out amid his sexual assault allegations. After multiple outlets reported that the Matlock actor, who portrayed associate Billy Martinez, had been removed from the Kathy Bates-led CBS series following an investigation surrounding a sexual assault allegation, his wife shared cryptic posts slamming his costar Leah Lewis. (CBS confirmed to multiple outlets that David had exited the series but did not elaborate further.) In a since-deleted Oct.