Been there. This happened about 3 years ago, it was also horribly blatant. We interviewed a candidate who blew us away, superior candidate, easy "yes" from ever

Been there. This happened about 3 years ago, it was also horribly blatant. We interviewed a candidate who blew us away, superior candidate, easy "yes" from everyone. then when he started, it became pretty clear within 2-ish weeks this was not the same person. He could not do basic BASIC tasks. The ironic part was, we did a video call, but none of us could remember what the original guy looked like, and we did not record the video.