Different Settings

As a native English-speaker, I was predisposed to prefer the U.K. episodes of Criminal rather than the Spanish, French, and German, but Criminal really went to impressive lengths to make sure that even those of us who aren't fluent in all four languages can enjoy all four batches of episodes. The episodes are dubbed in English for those who want to watch that way, and while it's never possible for the lips to match exactly when it comes to dubbing, Criminal does a very good job of it.