Jang Geun Suk's official come back and he chose a drama where he is portaying a con artist who changes places with a procecutor. Unlike other crime solving dramas with many cases, this one focuses only on one vilain that is connected to the main character's past. So, not much are happening on the story front. There was a big twist towards the end, but not that it isn't easy to predict it. Overall, the story was just okay. When it comes to performances, the switching characters was interesting, though it got a bit tiring after a while, and Geun Suk was good in changing personalities as well. However, at some point, the two weren't that different. Again, the game between who's who, even though it was entertaining at the begining, it got a bit dull. The rest of the performances were really good as well.
Summing up, I think that Switch was just an okay drama and it was entertaining sometimes. Just, don't expect too much from it.