While You Were Sleeping (Korean: 당신이 잠든 사이에; RR: Dangsini Jamdeun Saie) is a 2017 South Korean television series starring Lee Jong-suk, Bae Suzy, Jung Hae-in, and Lee Sang-yeob. Consisting of sixteen chapters distributed over 16 episodes, this legal drama-fantasy television series centers on the lives on three young adults—a field reporter, a prosecutor, and a police officer—who have acquired the ability to foresee future events through their dreams, after saving each other many years ago.