Risotto figures out that Doppio must be a Stand user that the boss trusts in deeply because he’s able to hear the noise from a certain Stand. Risotto then uses his Stand Metallic against him. Metallic is able to control magnetic force and attacks Doppio. Doppio uses the part of the boss’s power he received from him. While they’re fighting, Risotto realizes that Doppio’s personality and actions seem to be changing and he realizes exactly who Doppio is.
but it's as if he knew I was going 
to place those scissors there.
لكن بدا وكأنّه كان يعلم أنّني سأضع هذا
المقصّ هناك
aber er schien zu wissen,
dass ich die Schere dorthin tun würde.
pero se movió como si supiera
que pondría las tijeras allí.
pero se movió como si supiera
que pondría las tijeras allí.
mais on aurait dit qu’il savait
pour les ciseaux.
ma ha reagito come se sapesse già da prima
che gli avrei messo le forbici proprio lì.
mas parece até que ele sabia
que a tesoura surgiria ali.
Ты будто знал, что в нём 
появились именно ножницы,