Fun party/family game depends on questions and analysis to discover the spy among you. All players will be in one random place (e.g. pool) ecept one player who is the spy. The players have to ask each other about this place (e.g. do we need a special clothes fro this place? or is this place for fun?) to discover the spy.
This the fun part where players ask clever questions and the spy try to answer smartly.
Enjoy!