Re: Castle Season 5 (including Spoilers)
^Right. Since Alexis was missing from most of the story anyway, it was feasible to have Quinn go overseas and do that second-unit stuff at the same time that the rest of the cast and crew were making the rest of the episode.
That, and she was able to play it off as a vacation to keep the plot a secret.
What is money? It's little pieces of paper with pictures on it so we don't have to kill each other for food.