The Legend Liu Shan Men S1 E20

The Ming Emperor falls into a coma without naming a successor, which leaves the princes and Lord of Qi all vying for the throne. During this time, a series of murders was happening in the capital. Liu Shan Men, a government branch responsible for the safety of the capital, is ordered to investigate. The agents soon discover that the murders are only a precursor to a bigger conspiracy within the royal court.