Did anyone find Susan's character annoying? (spoilers)
Not only that, but her acting is absolutely atrocious in this movie. She was the only weak link to an otherwise masterpiece of a con-thriller.
Also...
The US Marshalls were NOT part of the con. Anyone that claims otherwise is just looking too much into this movie.
Lastly, the only plot hole I see was Jimmy Dell's presence on the ferry boat at the end. There is no way he could have gotten there so quickly.