My Life Is [A Never-Ending Story]

I think he is talking about this line.

At Linden's, Rose's cellphone rings and she answers it promptly. "It is done, Rose," the mysterious voice says. Rose winks at Oscar and says to the caller, "Excellent."

Either way, I don't think Nick is working with Rose because that would be Chad and Rose are working together which I seriously doubt. Basically Nick is to Chad as Oscar is to Rose. A loyal subject.

I think Salguod was talking about this line:

Nicholas comes out of the gas station and strides through the rain, an air of absolute confidence radiating from every defined step. He gets back in the car and, in one fluid motion, takes out his gun and spins around to face the backseat. "Goodbye, Agent Hudson." In a second's time, before Hudson can even blink, Nicholas fires two bullets cleanly into his head. He dies instantly. "You're as smooth as ever, Nick," Chad laughs. "Of course. Always," he replies as he puts his gun away and starts the car. "I take it the woman went well, too?" Chad asks. Nicholas merely nods. "Then let's get us out of here, shall we?"