I honestly thought she knew it was him all along
Don't try to cash in love, that check will always bounce.
I had thought early on - during the train scene, in fact - 'What if Depp is actually Alexander Pierce, that would be cool.' But then, when she kissed him in the hotel room and she failed to connect that is indeed WAS him, I kind of changed my mind. That was another HUGE plot hole, I think, because that kiss would've revealed his true identity to her; you can't alter a kiss with plastic surgery.
Swing away, Merrill....Merrill, swing away...
I don't think there was any plastic surgery either