Tony Leung Ka-fai

Kai

袁詠儀

Yee

伍詠薇

Wai Wai

劉曉彤

Pai

鄭丹瑞

Martin Cheng Sai Kit

Law Kar-Ying

Judge

Sheila Chan Suk-Lan

Kai's sister-in-law

方中信

Kai's brother

苑瓊丹

Woman in clinic [cameo]

Jacob Cheung

Cheung Chi-Sing

林偉亮

Michael

Rosa Chang Hing-Wan