Doctor Prisoner

Although not obviously similar, the ML in both of these is a doctor and a criminal, and both shows have you debating the morality of his character. With a partial prison setting, and a partial medical setting, both shows hold a high suspense, psychological tension and interesting premise. I highly recommend both of these.

Both are revenge dramas, though the premises are very different.
Though Doctor prisoner is more entertaining, Black revenge plot is also decent.
Black revenge deals mainly with scandals.