Inspector Karl (Louis Koo), the eponymous inspector who pays a visit to the opulent Kau family estate, where things are not as rosy as they appear. Family heads Mr. and Mrs. Kau (Eric Tsang and Teresa Mo) are prepping an engagement party for their daughter Sherry (Karena Ng), who's soon to marry handsome businessman Johnny (Hans Zhang). Alas, Inspector Karl informs them that a young woman named Cindy Cheung (Chrissie Chau) has been found dead of an apparent suicide, and he's got some questions for Mr. Kau... 《神探驾到》：揭开荒诞表象下的真相。《神探驾到》：黑色浸不透的港饼。荒诞表象下的趣味。看完评论我很伤心，至少我喜欢这部电影。一场开到荼蘼的浮华宴。谁是贾探员？——评《神探驾到》。不理解并不解释为烂。一部被忽略的好片。有些事情要自己去看自己去体会才知道。讨论一部烂片的意义。 社会上甚有地位的裘氏一族正准备迎接一场盛大的订婚派对，一位不速之客贾探员（古天乐 饰）却突然到访，并带来少女张小娟一尸两命的自杀命案，划破了裘家欢乐的气氛。裘家上至老爷（曾志伟 饰）太太（毛舜筠 饰）少爷（林家栋 饰）小姐（吴千语 饰），下至管家（罗兰 饰）均表示从不认识张小娟，岂料贾探员竟凭着死者的一本日记和一张照片，将裘家众人的华丽皮囊一一扯下，揭示出每人都跟死者有着莫大的关连！ 一场华丽的世纪夜宴如期举行，一片欢乐下，这名探员的到访，会彻底影响裘家的世纪盛宴吗？ 电影改编自英国著名舞台剧《An Inspector Calls》。
