Only discovered this recently and, boy, I'm glad I did! Thinking this was made in 2013, I'd say this show was ahead of its time with strong female lead who fiercely faced social issues of age and economic gap, or being in a competitive field which favored men. Wide age gap between the leads were overcome by their exceptional chemistry. Their conversations were also very mature despite much younger male lead (no bickering trope, thank god). This has the best, most peaceful and natural cohabitation of leads shown in Korean dramas.

There was no over-the-top antagonist and the villain was well used for the show's crime-thriller genre. Female lead acted really, really well and young male lead was also very good. The supporting cast equally did well in the acting department which made the show even more lovable. Show and the characters were well-written, where all the leads (main & secondary) have the biggest character growths seen in dramas.

There's never a dull moment in this show. It got me so hooked that I finished it in 2 days. And I so love the soundtrack!!! Definitely a classic you'd love to re-watch over and over again!