The series is in Korean and subtitled in English. I loved this series! I watched it every morning before leaving for work and it was tough breaking away from it because the writer and director always left the last 10-minutes building up to the next episode. The show is very well written and the cast is amazing. I never would have thought Korea could write, direct and cast a show of this caliber. The subtitles were excellent too. I just know that more people would love this show if they gave it a chance and used the subtitles.