The mystery in this film is done well. The story unfolds at a good pace as the detective gets involved and pieces of the puzzle fall into place. The point of view switches between three main characters and is told in real time as well as in flashback scenes. I sometimes wondered what was real and what wasn’t. The uncertainty of what was actually true grabbed my attention and was best part of the movie. Though the movie focuses on the mystery, I was left wondering about the character development. In several scenes Lee Sun-Kyun’s character shows his frustration but the impact of these scenes felt flat for me. Their relationship as a couple is seen in a few quick scenes and so little is shown of his fiancé in the beginning it was difficult for me to connect emotionally with her disappearance. While I was curious as to why she disappeared, I didn’t feel the angst of it. The driving force of the movie is the history and motivation of Kim Min-hee’s character. Her portrayal of the fiancé was excellent. Kim Min-hee plays her in such an emotional and multi-layered way I would have liked to have seen more. In particular, there was one flashback scene of Min-hee’s I found riveting. Instead of intense scenes like this, additional time is given to the detective work. The film is based on the Japanese crime novel, All She was Worth by Miyuki Miyabe and as an adaptation of a crime novel this makes sense. While interesting, I would have preferred to watch more than the brief and scattered scenes involving Kim Min-hee and definitely more scenes with her and Lee Sun-Kyun. Nevertheless, what I believed to be lack of character development may have been artistic license to intensify the mystery. Though you see the fiancé, it is just enough that she becomes an enigmatic figure. Whether this is intentional or the acting abilities of Kim Min-hee were squandered is debatable. Either way, Helpless is an intricately told mystery with a good mixture of psychological thriller and suspense. It’s a good watch and kept me guessing about the mysterious fiancé and how the story would play out.