thanksgiving with his family. the president and first lady paid tribute to all the lives lost during the pandemic. and five u.s. lawmakers are meeting with government officials in taiwan. congress won alissa slotkin tells nbc news she received a letter from the chinese embassy urging her to call off the trip or risk the relationship between the u.s. and chinese relations. back to dateline. detective evans knew he had to meet this mystery woman, the woman who was claiming she knew what happened to trent dejeer roe but was too frightened to talk about it. but then tom bullock playing gatekeeper agreed to meet face-to-face. any more than that, maybe not. she agreed to do an interview and just asked that it be kept under wraps until we can get him secured. we negotiated that.