Season
- Season 1 2019-07-17
Episode
- Episode 1: The Beginning of the Attempted Murder Case
- Episode 2: Gi Mu Hyeok Returns As a Teacher
- Episode 3: Byung Ho Gets Bullied
- Episode 4: The Chauffeur
- Episode 5: The Secret Sysop
- Episode 6: Ye Ri’s Trap
- Episode 7: Tae Ra’s Recital
- Episode 8: Class Two’s New Homeroom Teacher
- Episode 9: Spy App
- Episode 10: Tae Seok’s Death
- Episode 11: Restoring Beom Jin’s Phone
- Episode 12: Han Su Wakes up from a Coma
- Episode 13: Han Su’s False Testimony
- Episode 14: Su Ah’s Mail
- Episode 15: The Big Blow
- Episode 16: Beom Jin Stands as a Witness
Class of Lies Season 1 The Secret Sysop
Ki Moo-Hyeok, a lawyer with a high winning rate, only cares about money. Due to a murder case at a high school which he deals with, his reputation as a lawyer hits rock bottom. To regain his good name as a lawyer, he sneaks into the high school and work as a temporary teacher. He tries to reveal a secret which the students have, and gets involved with Teacher Ha So-Hyun, a P.E. teacher who loves her students. They then face the students'secret.
