Shi Mok turns his attention to an unusual case involving the sudden death of a former prosecutor, and finds that nothing quite adds up.

A witness, who says he saw the kidnapping, steps forward to identify the perpetrator. His claims could mean serious trouble for the police.

Taken off the case, Shi Mok and Yeo Jin return to their work on the police-prosecutor council. Tae Ha and Bit head to a sensitive meeting together.