Have group members sit in a circle. Then choose one person to be the Chief Inspector and instruct that person to stand in the centre of the circle. Then direct the Chief to go somewhere in the circle and ask that peson where he or she was on a specific day during the last two weeks, a specific month in the last year, or a specific year in their life. eg. the Chief may ask "where were you last Tuesday" or "Where were you at age 5".
Allow the person to answer the question honestly or dishonsetly, then have the Chief Inspector guess whether the answer is true or false. If the Chief Inspector guesses correctly, the person who answered the question becomes the new Chief Inspector. Continue until each person in the circle has been questioned at least once.