Traitors fans have predicted a massive twist in the BBC murder mystery that could save a major fan favourite. In Friday's episode, viewers were left on a cliffhanger as Diane was handed a poison chalice that will eliminate her if she drinks from it. Claudia set the Traitors the tricky task of committing murder in plain sight, making the three secret assassins discuss who they were planning to eliminate and getting them to drink from a poison chalice.