因持有一名失踪公务员的护照，无家可归的14岁男孩马可在丹麦边境遭到逮捕。警探卡尔·穆尔克及其悬案组负责找出关联的线索。旧案件疑点重重：那名公务员在失踪前不久被指控有恋童癖，结案速度也异常地迅速。然而，沉默受惊的马可不愿开口交谈。他很快就从企图杀人封口的人们手下逃了出来。本片改编自丹麦作家尤西·阿德勒-奥尔森的同名小说，是其“悬案密码”系列的第五部作品。

古迪饰演总警督Carl Morck，一场暴力事件让他的人生天翻地覆，并留下精神创伤，他被委派去建立被称为"Department Q"的悬案小组。起初，理想破灭的他乐得在这里浪费时间，但作为警察的直觉最终觉醒，他的新部门深深吸引了很多不合群的人、特立独行者。

丹麦悬疑犯罪片，该片刷新丹麦国产片票房纪录，是系列电影《悬案密码》的第四部，也是最终章，《悬案密码》系列改编自丹麦小说家尤西·阿德勒-奥尔森（JussiAdler-Olsen）的同名小说，

精明强干的梅瑞特（松佳·里奇特 Sonja Richter 饰）是一名国会的议员，每日过着朝九晚五生活的她再也没有想到，自己竟然会被邪恶的绑匪盯上。更糟的是，这个古怪的绑匪并不要求赎金，而是不断的向梅瑞特提出一个问题，只要答对了这个问题，梅瑞特就能够获得自由，然而，这却是一个梅瑞特始终都无法回答的难题。 　　就这样，梅瑞特一直待在黑暗阴冷的监牢里，随时面临着死亡的威胁。当外界的所有人都坚信她不再可能生还而放弃了寻找解救她的希望是，只有卡尔（尼古拉·雷·卡斯 Nikolaj Lie Kaas 饰）一人坚信，梅瑞特依旧在世界的某个角落等待着他。为了找到梅瑞特，卡尔开始了独自的调查。

几十年前，一对年幼的兄妹在自家的小屋里惨遭杀害，唯一可能犯案的，是当时在那里度假的寄宿学生，然而，因为证据不足，最终这群学生们未能被定罪，小屋案成为了未破的悬案，而当年负责此案件的警探卡尔（尼古拉·雷·卡斯 Nikolaj Lie Kaas 饰）也因此一蹶不振，这宗疑点重重的案件成为了他的一块心病。 　　一晃眼几十年过去，当年的寄宿学生们已经长大成人，活跃在上流社会之中，虽然他们衣冠楚楚风度翩翩，但实际上，他们扭曲的心灵早就令这些人成为了野兽，唯有在杀戮中才能获得快感。当卡尔重拾曾经的悬案之时，危险也在一步一步的接近着他和他的家人们。

几十年前，一对年幼的兄妹在自家的小屋里惨遭杀害，唯一可能犯案的，是当时在那里度假的寄宿学生，然而，因为证据不足，最终这群学生们未能被定罪，小屋案成为了未破的悬案，而当年负责此案件的警探卡尔（尼古拉·雷·卡斯 Nikolaj Lie Kaas 饰）也因此一蹶不振，这宗疑点重重的案件成为了他的一块心病。 　　一晃眼几十年过去，当年的寄宿学生们已经长大成人，活跃在上流社会之中，虽然他们衣冠楚楚风度翩翩，但实际上，他们扭曲的心灵早就令这些人成为了野兽，唯有在杀戮中才能获得快感。当卡尔重拾曾经的悬案之时，危险也在一步一步的接近着他和他的家人们。

《悬案密码》系列的第三部：6年前，一只在海上漂流的瓶子在苏格兰被打捞上岸，然而里面的求救信却被视为不祥之物，直到一位调查人员无意中看出了信件开头用丹麦文写着：救命！随着卡尔和两名下属的破解，他们发现署名“保罗”的作者不仅确有其人，而且在写下瓶中信后便下落不明...... 　　为何少年的家人不曾追究他的行踪？难道他在多年前便已遭遇不测？正当调查陷入胶着，一起离奇车祸让原本天衣无缝的邪恶罪行露出破绽，串起所有线索的卡尔这才明白，自己面对的并不单是一桩陈年旧案，而是过去十几年来，许多破碎家庭的绝望呼救…

Omar has been living in London for a decade, spending his days working in the City and his nights ignoring phone calls from his family in Lebanon. One evening, restless after another pleading voicemail from his mother, he reaches for his phone and invites over Marco, a Spanish student newly-arrived in London and doing sex work to earn a little extra cash. But when Marco arrives, Omar can’t shake the feeling that something’s not right about him. As their night together progresses truths will be revealed, defenses lowered, and Omar will discover just what it took for Marco to be here.

A drama-thriller that tells the story of a deportee who never existed. It spins the tale of the life of a man who, for years, was able to keep telling a lie in the public eye, and even to his own family. It was a lie that’s difficult to make up: that he had been a prisoner in a Nazi concentration camp. 　　Indeed, Enric Marco Batlle (1921-2020) was a Spanish trade unionist who served as secretary-general of the National Confederation of Labor (CNT) and as the president of the Amical de Mauthausen association in Spain. During his time at the head of this association, he gave a large number of talks, chiefly in educational institutions, about his alleged life as a survivor of the Nazis, replete with anecdotes and tiny details; however, in 2005, he courted international infamy after a report by historian and researcher Benito Bermejo (who specialises in studying Spaniards who were deported to concentration camps) discovered that he had falsified information in his biography so as to appear as a survivor of the Nazi extermination camp in Flossenbürg. Despite this, he never apologised for the hoax.

A drama-thriller that tells the story of a deportee who never existed. It spins the tale of the life of a man who, for years, was able to keep telling a lie in the public eye, and even to his own family. It was a lie that’s difficult to make up: that he had been a prisoner in a Nazi concentration camp. 　　Indeed, Enric Marco Batlle (1921-2020) was a Spanish trade unionist who served as secretary-general of the National Confederation of Labor (CNT) and as the president of the Amical de Mauthausen association in Spain. During his time at the head of this association, he gave a large number of talks, chiefly in educational institutions, about his alleged life as a survivor of the Nazis, replete with anecdotes and tiny details; however, in 2005, he courted international infamy after a report by historian and researcher Benito Bermejo (who specialises in studying Spaniards who were deported to concentration camps) discovered that he had falsified information in his biography so as to appear as a survivor of the Nazi extermination camp in Flossenbürg. Despite this, he never apologised for the hoax.