Everyone seems to be keeping secrets in this episode. When Sloan asked Tom if he asked his mother what the tattoo on his back meant, he told her that he didn't get that far, when in fact his mother told him that it means he was chosen to be one of their leaders. When Dr. Attwood's boss asked him who was translating the pillar brought back from Mexico he told her Sloan and Ed were working on it. He deliberately avoided telling her Tom was in the warehouse helping them decipher the pillar. Detective Peterson is avoiding telling his wife about the new species as it's frightening and there's nothing that can be done about it.