A policeman discovers a love affair between his teenage daughter and her teacher which leads him back to an unsolved murder case he investigated 10 years ago.
| Actor | Role |
|---|---|
 Sung Dong-ilDetective Lee Sang-won | Detective Lee Sang-won |
 Kim You-jungLee Jung-hyun | Lee Jung-hyun |
 Son Ho-junNam Chul-woong | Nam Chul-woong |
 Seo Yea-jiKang Yoo-sin | Kang Yoo-sin |
 Jin KyungReporter Kim | Reporter Kim |
 Jo Eun-jooMs. Kim | Ms. Kim |
 Lee Kyung-jinYoo-sin's mother | Yoo-sin's mother |
 Choi Yu-riShin Ki-jung | Shin Ki-jung |