4th Period Mystery (2009) featured a cast of 17 tracked actors. Of these, 13 (100%) are still alive today. The oldest surviving cast member is Min Kyung-jin, age 71. This film starred Yoo Seung-ho and Kang So-ra.
100% still with us· verified cast76% of full cast · incl. 4 unverified
Survivorship
Cast Reunion Index: 100% still living
Cast17 members
| Person | Character | Status | DOB | Age | DOD | Age in 2009 |
|---|---|---|---|---|---|---|
 Yoo Seung-ho Han Jung-hoon | Han Jung-hoon | Living | 17/08/1993 | 33 | — | 16 |
 Kang So-ra Lee Da-jeong | Lee Da-jeong | Living | 18/02/1990 | 36 | — | 19 |
Jo Sang-geun Kim Tae-gyoo | Kim Tae-gyoo | Living | 01/01/1986 | 40 | — | 23 |
Jeon Jun-hong Byeong-soo | Byeong-soo | Unverified | — | — | — | — |
 Jeong Seok-yong Kang Gook-man | Kang Gook-man | Living | 31/12/1970 | 55 | — | 39 |
 Park Cheol-min Crazy | Crazy | Living | 18/01/1967 | 59 | — | 42 |
 Rie Young-zin Yun Sang-mi | Yun Sang-mi | Living | 24/02/1981 | 45 | — | 28 |
Kim Dong-beom Do-il | Do-il | Unverified | — | — | — | — |
 Jo Yoon-hee Hong Ju-hee | Hong Ju-hee | Living | 13/10/1982 | 43 | — | 27 |
Lee Chan-ho Tak Teuin | Tak Teuin | Unverified | — | — | — | — |
 Min Kyung-jin Headmaster | Headmaster | Living | 24/05/1955 | 71 | — | 54 |
 Im Soo-hyang Fan | Fan | Living | 19/04/1990 | 36 | — | 19 |
 Kim Young-woong History teacher | History teacher | Living | 20/02/1971 | 55 | — | 38 |
 Jung Young-ki Student in Grade 2 Class 5 | Student in Grade 2 Class 5 | Living | 18/10/1981 | 44 | — | 28 |
 Oh Jin-ha Student in Grade 2 Class 5 | Student in Grade 2 Class 5 | Living | 28/09/1988 | 37 | — | 21 |
 Choi Hong-rak Student in Grade 2 Class 5 | Student in Grade 2 Class 5 | Unverified | — | — | — | — |
 Kim Min-su Virtual Criminal | Virtual Criminal | Living | 09/10/1969 | 56 | — | 40 |