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.
The scalpel is pointing in the 
direction of the magnetic force!
!يشير المِبضَع إلى جهةِ القوّة المغناطيسيّة
Das Skalpell zielt in Richtung
der magnetischen Kraft!
¡El escalpelo se alinea
con la fuerza magnética!
¡El escalpelo se alinea
con la fuerza magnética!
Le scalpel indique
d’où vient le magnétisme !
E i bisturi puntano in direzione
della sua forza magnetica!
O bisturi está apontando para
a origem do campo magnético!
Скальпель указал, куда его тянет!