新學期還未開始，魔法界就籠罩在一片風聲鶴唳之中，連魔法部部長都換了人！但蠢蠢欲動的佛地魔和食死人到底設下了什麼陰謀？鄧不利多為何一再帶哈利波特觀看儲思盆裡的記憶？而讓哈利成為魔藥學天才的『混血王子』，到底又隱藏著什麼神秘企圖？升上六年級的哈利，終於發現自己要面對的不只是『責任』而已……

『佛地魔的僕人已被束縛了十二年之久，今晚午夜以前，他將幫助佛地魔東山再起……』
哈利波特升上三年級了，占卜學教授卻對他發出可怕的預言，到底『佛地魔的僕人』指的是誰？
暑假才剛要結束，阿茲卡班監獄就發生了空前的越獄事件！傳言逃犯天狼星·布萊克就是十三年前出賣了詹姆和莉莉的人！現在他將矛頭指向哈利波特，因此連一向安全的霍格華茲學校，也進駐了魔法界最令人膽寒的獄卒『催狂魔』負責守護，校園裡一片風聲鶴唳！
除了要防範天狼星·布萊克的偷襲行動，更讓哈利波特覺得丟臉的是，他一碰到全身罩著斗篷、陰森恐怖的『催狂魔』就會昏倒！同時寒意竄入他的胸膛、腦袋裡不斷出現莫名的尖叫聲，並吸去他所有快樂的感覺。哈利波特要如何對抗『催狂魔』的威脅，並趕在午夜時限到達之前，找出潛伏的佛地魔僕人，阻止一場大災難的發生呢？

在一条寂静的走廊尽头有一扇门，这一幕萦绕在哈利·波特的梦中，使他时常在半夜醒来，惊惧尖叫。
哈利·波特面对的不仅是即将到来的O.W.L.考试，他还要面对一位性格就像毒马蜂似的新任校领导，还有一个又恶毒又不满的家养小精灵，以及那个连名字都不能提的魔头日益增长的威胁……
哈利现在面对的是魔法世界政府的不可信赖，还有霍格沃茨校方的无能为力……
尽管如此，或者正因如此，他从朋友那里获得了前所未有的深厚友谊和勇气，还有无限的忠诚和难以承受的牺牲……
“我们和你一起去，哈利。”
——纳威·隆巴顿

《哈利·波特与密室》是“哈利·波特”系列的第二部。
哈利·波特在霍格沃茨魔法学校学习一年之后，暑假开始了。他在姨父姨妈家熬过痛苦的假期。正当他准备打点行装去学校时，小精灵多比前来发出警告：如果哈利返回霍格沃茨，灾难将会临头。
但哈利义无返顾地回到了霍格沃茨，新来的吉罗德·洛哈特教授装腔作势，让他作呕；游荡在女生舆洗室里的幽灵“哭泣的桃金娘”搅得他不得安宁；低年级的小女生金妮对他投来关切目光常令他尴尬不已；小男生科林·克里维“追星”式的跟踪又经常使他落荒而逃。
但是，这一切仅仅是灾难的序曲。正如多比所预言的，哈利遭受了重重磨难，经历了种种危险，难解之谜又使他煞费苦心：霍格沃茨的学生接二连三地变成了石头。这一切是品德败坏的学生德拉科·马尔福精心策划的杰作？还是忠厚善良的海格无心铸成的大错？或者另有人将在霍格沃茨制造更大的阴谋？这一切又是否与传说中的密室有关？哈利决心揭开谜底……

一岁的哈利・波特失去父母后，神秘地出现在姨父姨妈家的门前。哈利在姨父家饱受欺凌，度过十年极其痛苦的日子。姨父和姨妈好似凶神恶煞，他们那混世魔王儿子达力――一个肥胖、娇惯、欺负人的大块头，更是经常对哈利拳脚相加。哈利的“房间”是位于楼梯口的一个又暗又小的碗橱。十年来，从来没有人为他过过生日。
但是在他十一岁生日那天，一切都发生了变化，信使猫头鹰带来了一封神秘的信：邀请哈利去一个他――以及所有读到哈利故事的人――会觉得永远难忘的、不可思议的地方――霍格沃茨魔法学校。
在魔法学校，哈利不仅找着了朋友、学会了空中飞行，骑着一把型号为光轮2000的飞天扫帚打魁地球，还得到了一件隐形衣。他发现那里的一切――从上课到吃饭到睡觉都充满了魔力，但是一块魔石出现了，它与哈利的命运息息相关……

Returning for his fifth year of study at Hogwarts, Harry is stunned to find that his warnings about the return of Lord Voldemort have been ignored. Left with no choice, Harry takes matters into his own hands, training a small group of students to defend themselves against the dark arts.

When Harry Potter's name emerges from the Goblet of Fire, he becomes a competitor in a grueling battle for glory among three wizarding schools—the Triwizard Tournament. But since Harry never submitted his name for the Tournament, who did? Now Harry must confront a deadly dragon, fierce water demons and an enchanted maze only to find himself in the cruel grasp of He Who Must Not Be Named.

Year three at Hogwarts means new fun and challenges as Harry learns the delicate art of approaching a Hippogriff, transforming shape-shifting Boggarts into hilarity and even turning back time. But the term also brings danger: soul-sucking Dementors hover over the school, an ally of the accursed He-Who-Cannot-Be-Named lurks within the castle walls, and fearsome wizard Sirius Black escapes Azkaban. And Harry will confront them all.

Cars fly, trees fight back, and a mysterious house-elf comes to warn Harry Potter at the start of his second year at Hogwarts. Adventure and danger await when bloody writing on a wall announces: The Chamber Of Secrets Has Been Opened. To save Hogwarts will require all of Harry, Ron and Hermione’s magical abilities and courage.

Harry Potter has lived under the stairs at his aunt and uncle's house his whole life. But on his 11th birthday, he learns he's a powerful wizard—with a place waiting for him at the Hogwarts School of Witchcraft and Wizardry. As he learns to harness his newfound powers with the help of the school's kindly headmaster, Harry uncovers the truth about his parents' deaths—and about the villain who's to blame.