The Traitors season 4 is already off to a dramatic start. This post has spoilers for The Traitors season 4 premiere. The campy murder-mystery competition returned to Peacock on Thursday, January 9, where host Alan Cumming tapped Lisa Rinna, Candiace Dillard Bassett, Rob Rausch and Donna Kelce as the season 4 villains. (Kelce was chosen as the "Secret Traitor" in an opening night twist but was later banished by the cast.