110 mins | Action, Thriller | Sept. 25, 2008
110 mins | Action, Thriller | Sept. 25, 2008
| IMDb rating | 6.6 |
| Producers | Emperor Motion Pictures, Warner China Film HG Corporation, Armor Entertainment, BNJArmor, Sirius Pictures International, China Film Group Corporation |
| Original title | 保持通話 |
| Directors | Benny Chan |
| Writers | Bing Xu, Alan Yuen, Benny Chan, Chris Morgan, Larry Cohen |
as Bob
as Grace Wong
as Detective Fai
as Senior Inspector Fok
as Tong
as Detective Cheung
as Jen
as Roy Wong
as Jeannie
as Michelle
as Joe
as Headmaster (as Felix Lok)