GTA SA: Key to Her Heart Key to Her Heart is a mission in Grand Theft Auto: San Andreas given to protagonist Carl Johnson by Wu Zi Mu as part of plans to pull off a heist off Caligula's Palace from The Four Dragons Casino, located along The Strip in Las Venturas, San Andreas. Carl has just returned from the Las Venturas City Planning Department with the blueprints of Caligula's Palace, which he and Woozie intend to burglarize. The next step in his plans involves providing his team access to Cali