Witness is filled with both tension and laughter as the Witness Agency’s best agents struggle to keep their facts straight as they chase after the truth.The Sigma Club contains an adventure with 8 individual cases woven into an overarching story: A university in Lugano, Switzerland, is suspected of being involved in criminal activities. When a Student is murdered, the investigations lead the players to Italy. Apparently, the Mafia is involved. And then suddenly events take a turn for the worse…