Knock Knock Who's There (2015) featured a cast of 17 tracked actors. Of these, 14 (88%) are still alive today and 2 have passed away. The oldest surviving cast member is Cheng Chu-Fung, age 72. This film starred Jennifer Tse Ting-Ting and Kate Tsui Tsz-Shan.
88% still with us· verified cast82% of full cast · incl. 1 unverified
Survivorship
Cast Reunion Index: 88% still living
Avg. Age at Death: 66 yrs
Deaths by Year
2024
2026
Cast17 members
| Person | Character | Status | DOB | Age | DOD | Age in 2015 |
|---|---|---|---|---|---|---|
| Yan | Living | 07/09/1982 | 44 | — | 33 | |
 Kate Tsui Tsz-Shan Shou Yung | Shou Yung | Living | 19/06/1979 | 47 | — | 36 |
 Annie Liu Xin-You Isabella | Isabella | Living | 01/04/1981 | 45 | — | 34 |
| Roy | Living | 08/12/1986 | 39 | — | 29 | |
 Venus Wong Man-Yik Carmen | Carmen | Living | 01/01/1992 | 34 | — | 23 |
 Simon Lui Yu-Yeung Florist | Florist | Deceased | 08/07/1964 | 62 | 07/09/2026 | 51 |
 Carrie Ng Ka-Lai Florist Boss | Florist Boss | Living | 30/11/1963 | 62 | — | 52 |
 Eric Kwok Wai-Leung Market Sun | Market Sun | Living | 03/02/1974 | 52 | — | 41 |
| Niki | Living | 02/12/1987 | 38 | — | 28 | |
 Carlos Chan Ka-Lok Harry | Harry | Living | 12/10/1986 | 39 | — | 29 |
 Sam Leung Kin-Ping Uncle Yi | Uncle Yi | Living | 01/07/1960 | 66 | — | 55 |
 Violet Lee Ying Isabella's Mother | Isabella's Mother | Deceased | 18/08/1953 | 70 | 25/02/2024 | 62 |
 Cheng Chu-Fung Funeral Home Staff | Funeral Home Staff | Living | 19/04/1954 | 72 | — | 61 |
 Ruth Tsang Funeral Home Staff | Funeral Home Staff | Living | 20/09/1967 | 59 | — | 48 |
| Living | 02/10/1974 | 51 | — | 41 | ||
| Unverified | — | — | — | — | ||
| Living | 04/05/1956 | 70 | — | 59 |
