Dear X

A lawyer with a ten-percent winning rate is caught up in a murder case and becomes the notorious and genius con artist, Big Mouse, overnight. In order to survive and protect his family, he tries to reveal the true colors of the privileged people involved in a huge conspiracy.

After the culprit in the Joker Murder Case, Jeong Man-chun is killed post-trial, jurors start dying. Detective Ryu Sung-jun, suspected of the crime, seeks the true killer with his brother and a juror.

A superhero drama about Soo-yeol who has lived his whole life as a materialistic police detective, but changes into a champion for justice and fights against police corruption when a hidden persona called "K" awakens inside him.

As a killing resembling a cold case resurfaces in a small town, the chase for the truth falls on two policemen who each harbor secrets of their own.

Seo Dong-ju, who hacked a political slush fund worth two trillion won, risks it all for revenge.