The Second Mission from the Boss

In order to protect Trish from the Hitman Team, Bucciarati and crew's second mission from the boss was to go find a key in Pompei for some kind of vehicle that should aid them later on. Following orders, Giorno, Abbacchio, and Fugo head to Pompei to retrieve the key. When they get there, Fugo notices a suspicious shadow reflecting in a mirror that happened to be placed on one of the pillars there...