"Secret" was a game-talk show featuring secrets of celebrities. Stars must play games and succeed to prevent a secret of theirs from being revealed by a friend.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Episode 1 | 2013-09-25 | 60 min |
| Season 1 | Episode 2 | Episode 2 | 2013-09-26 | 67 min |
| Season 1 | Episode 3 | Episode 3 | 2013-10-02 | 68 min |
| Season 1 | Episode 4 | Episode 4 | 2013-10-03 | 66 min |
| Season 1 | Episode 5 | Episode 5 | 2013-10-09 | 65 min |
| Season 1 | Episode 6 | Episode 6 | 2013-10-10 | 60 min |
| Season 1 | Episode 7 | Episode 7 | 2013-10-16 | 60 min |
| Season 1 | Episode 8 | Episode 8 | 2013-10-17 | 60 min |
| Season 1 | Episode 9 | Episode 9 | 2013-10-23 | 60 min |
| Season 1 | Episode 10 | Episode 10 | 2013-10-24 | 60 min |
| Season 1 | Episode 11 | Episode 11 | 2013-10-30 | 60 min |
| Season 1 | Episode 12 | Episode 12 | 2013-10-31 | 60 min |
| Season 1 | Episode 13 | Episode 13 | 2013-11-06 | 60 min |
| Season 1 | Episode 14 | Episode 14 | 2013-11-07 | 60 min |
| Season 1 | Episode 15 | Episode 15 | 2013-11-13 | 60 min |
| Season 1 | Episode 16 | Episode 16 | 2013-11-14 | 60 min |
| Directing | Kim Sang-mi | Director |
| Directing | Lee Tae-hyun | Director |
| Directing | Park In-seok | Director |
| Writing | Choi Hang-seo | Writer |
| Writing | Choi Young-ju | Writer |
| Writing | Jung Si-yoon | Writer |
| Writing | Kim Su-mi | Writer |
| Writing | Son Soo-young | Writer |
| Writing | Yang Gyu-ok | Writer |