Korean Drama "Dr. Brain" is a masterful sci-fi thriller that provides a solid mystery.

What Dr. Brain offers is a suspenseful plot that keeps the audience hooked till the very last minute. With intense performances to boot, a mystery that is slowly being unfolded, an interesting sci-fi element, and engaging characters, the drama creates the right atmosphere, with dark shades that come close to the horror element at times.

However, the CGI were bad and almost ruined the mood at times. The horror, flashy scenes were also a bit overused and nearly shifted the focus from the character based mystery to a psychological thriller.

Still, the ending was brilliant, leaving it to the viewer to interpret what actually happened.

So, overall, 8 out of 10.