Stiles also had a small but crucial role as Treadstone operative Nicolette "Nicky" Parsons in The Bourne Identity (2002), a role that was enlarged in The Bourne Supremacy (2004), then greatly expanded in The Bourne Ultimatum (2007).
Stiles havde også en lille, men yderst vigtig rolle som operatøren Nicolette "Nicky" Parsons i The Bourne Identity fra 2002, en rolle som blev gentaget og udvidet i The Bourne Supremacy 2004, for til sidst at ende med at blive en stor rolle i The Bourne Ultimatum fra 2007.