 Shu QiAi Lin / Lynn | Ai Lin / Lynn |
 Vicky Zhao WeiAi Quan / Sue | Ai Quan / Sue |
 Karen Mok Man-WaiKong Yat Hung | Kong Yat Hung |
 Song Seung-heonYen | Yen |
 Yasuaki KurataMaster | Master |
 Michael Wai Chi-HoMa Siu Ma | Ma Siu Ma |
 Deric WanChow Nunn | Chow Nunn |
 Josephine Lam Kei-YanAlice Chow | Alice Chow |
 Shek SauChow Lui | Chow Lui |
 Josie HoChing | Ching |
 May Kwong Man-ChunMay | May |
 Henry Fong PingLynn's Father | Lynn's Father |
 Nina Paw Hei-ChingLynn's Mother | Lynn's Mother |
 Kam Hing-YinCaptain | Captain |
 Ben Lam Kwok-BunBen | Ben |
 Ricardo Mamood-VegaPeter | Peter |
 Tats Lau Yee-TatGhost King | Ghost King |
 Lam Sheung-MoLai Kai-joe | Lai Kai-joe |
| WWong So-BikMay | May |
 Leo Ku Kui-KeiMan in Lift | Man in Lift |
 Leon HeadBenevolent Killer of Lynn's Parent (flashback) | Benevolent Killer of Lynn's Parent (flashback) |
 Jude PoyerKiller of Lynn's Parent (flashback) | Killer of Lynn's Parent (flashback) |
| DDavid John SaundersKiller of Lynn's Parent (flashback) | Killer of Lynn's Parent (flashback) |
| DDave TaylorKiller of Lynn's Parent (flashback) | Killer of Lynn's Parent (flashback) |
 Ben Yuen Foo-WahMr Yeung | Mr Yeung |
 Huang KaisenWong Fat Chi/Armed Robber in Lift | Wong Fat Chi/Armed Robber in Lift |
 Jiang Ke-ChengLee Hong Fai/Elevator Killer | Lee Hong Fai/Elevator Killer |
 John Cheung Chan-SangPoliceman | Policeman |
 Kong Fu-KeungRobber | Robber |
 Kenji TanigakiHitman | Hitman |
