Interrogate Paul and deduce his secret
Interrogate Paul and deduce his secret. You must take turns to enter the lab and ask him one yes-or-no question. Only one person of the team may be in the house at a time. You may only communicate with your teammates using the whiteboard in the lab, and you cannot write any words. Fastest to deduce Paul's secret and get him to confess to it by saying 'yes' wins. Your time starts now.