●In dramas they say the person least suspected is actually the killer, following the same theory, the ADAMAS was at a place least expected to be and i guessed it right.

●I believed that nothing can go wrong when Ji Sung is in a drama. I have a strong faith in his projects for his spectacular character portrayal and amazing performances. I was a bit confused due to the twins concept but at the end of ep1, I decided to binge it. The story is unbelievably crazy, every episode revolves around ADAMAS Theft, murder, and powerhouse and when viewers think OK, the ADAMAS is found, a new twist happens and shows that what happened was just the tip of the iceberg with new secrets being revealed. The ending was a disappointment, I can be happy with an open or sad ending but a hint of season 2 was the least I expected. I don't want to be in a cliffhanger for a year.

●Acting is top-notch by everyone. No complaints about this., even the minor characters were bang.
#Ji Sung is always incredible. I was convinced with acting but not the actions so that minus the points of writers. He magnificently plays the twins and gives a usual twin sibling yet has a distinct emotional characterization.
#Seo Ji Hye playing Eun Hye Soo is a mysterious grey character. feels like a twisted, game-changer. To be saying psycho would be wrong, she is an elegant devious person. She is neither wrong nor right. She is a victim of a powerhouse but shows a strong character. it would still be wrong to put her as antagonist or protagonist until we know her full story.
#Lee So Kyung playing Kim Seo Hee was such a pain, she was on my nerves until the end. She was so stubborn and put everyone in danger with every decision she makes. The actress plays the character beautifully but was a pain in the head.

●Music is spooky and mysterious, like a series of mysterious events, it dropped at perfect scenes giving chills.
Park Hae Eun, as Sun, seems cute, but high on drugs. she really left an impression with her appearance as psycho. hope to see her more work.

● rewatching this drama is not possible because it is ending even though a roller coaster ride, it's disappointing.
● Also the twins concept is still a mystery cause I think the writers might have an unfinished base story so they left us with a hint second season.

●Watch this drama if like a thriller, mystery, or treasure hunt type of drama.
●Do not watch if you want some romance or humor cause the series has no romance, but an unusual tension between both the lead pairs.