《金锁匙》是由叶荣祖执导，邓光荣,林建明,唐菁,林伟祺主演的剧情片。该电影于1978年在香港上映。1978年，由影迷心目中的「學生王子」鄧光榮和當時憑選美甫身影圈的林建明領銜主演的香港經典電影《金鎖匙》，葉榮祖執導，羅維監製，劉觀偉和陳勲奇分別掌鏡和配樂。林建明憑1975年《社女》的光頸豪放造型而一躍而紅，在《金鎖匙》中扮演神秘莫測的美人，再加上電影中緊張又刺激的劇情，令此片值得回味。故事講述張秀娟是位充滿神秘色彩的女郎，她專門勒索上流社會的名人。張秀娟具有大亨們的把柄，只好向她獻上了大額的金錢。大亨鄭永盛設計捉張秀娟，幸有青年方大均救走她……
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