I checked out the first two episodes of ‘Time Between Dog and Wolf’ on mysoju.com. This looks like a good one; sixteen episodes in all. The theme is law enforcement/national security. Warning: the written summary on mysoju contains a spoiler.
Most of episode one was filmed in Thailand and two of the three main stars are portrayed as children. Episode two shows the three main stars as adults in Korea ten years later. I’ll bet a few historical dramas have used this child-to-adult plot device too.
If you’re a fan of Kim Jeong Nam (Ban Soyeong from ‘You are my Destiny’), she’s a guest star in episode one. Her role is quite different from the ditz she plays on YAMD. In episode two, I recognized the woman who played Hanam’s mother in ‘The Infamous Chill Sisters’ (I couldn’t forget her weird lips).
Also, the start of episode one sort of rips off the opening scene from this American movie: