Phantom (Korean: 유령; RR: Yuryeong) is a 2012 South Korean television series, starring So Ji-sub, Lee Yeon-hee, Um Ki-joon, Kwak Do-won, and Song Ha-yoon. The police procedural tackles crimes and clues in the cyber world, weaving a massive, twist-filled mystery of murders, identity switches, corruption and conspiracy. It aired on SBS from May 30 to August 9, 2012 on Wednesdays and Thursdays at 21:55 for 20 episodes. Kim Woo-hyun is the only son of a prominent police officer. Determined to make his own mark, he breezes through the police academy, and along the way racks up accolades, top of the class honors, a lot of praise and perhaps envy from his colleagues. Assigned to the cyber investigations unit, Detective Kim finds himself entrenched in an intense cat and mouse game with faceless enemies in the cyber world. Tirelessly hunting a hacker named Hades, he traces the hacker's location to an apartment building and arrives just in time to witness an actress fall to her death from the high-rise.