8/10 is my rating. This is a 2015 South Korean drama that ran for 16 episodes (~60 minutes/episode). The male lead, Min-Ho (Jung Kyoung-Ho) is a cut-throat businessman who works for a company that forces mergers and buys up assets on failing businesses. His near psychotic practices has earned him the nickname the serial killer. His life goal has been to get revenge on his uncle who cheated his family out of assets when his father died by taking over the company Min-Ho's father created. The female lead, Soon-Jung (played by Kim So-Yeon) is a senior secretary whose father was part of the power structure who enabled Min-Ho's uncle to gain control of the company when Min-Ho's father died. His father ran a large company, but his death led to his uncle taking over the company. Soon-Jung has lived her life caring about other people and the company she has dedicated her life to more than herself. Her please to Min-Ho to save the innocent factory workers fall on deaf ears until Min-Ho literally has a change of heart.

Spoiler ? It was interesting to explore the issue of cellular memory and a thought that perhaps memories could be stored in areas other than the brain. There have been a couple of cases that have been hard to dismiss as coincidence in real life although mainstream science does not embrace the concept. This is a heavy show. There is romance, murder mystery and corporate intrigue which makes it interesting and keeps you engaged. I was really worried about how it would end and was convinced that it may not end well. It ended up okay though. I liked the interaction and relationship between a variety of the characters.

Most ratings are in the high 8s out of 10 and I would agree with that. I would add, however, it is not light hearted and those that are easily saddened by events in media might consider timing when they watch this (don't think it will cheer you up - the topics are much heavier than that).