比尔(杰里米•希尔伯德 Jeremy Theobald 饰)是个游手好闲的作家,借跟踪陌生人打发时间。这让他体验到形形色色的人生,很神秘,也很刺激。不过,有一次,比尔盯上了一个西服革履的家伙克布(艾利克斯•浩尔 Alex Haw 饰)。尾随到餐厅之后,他却被对方识破,只得摊牌。克布是个贩卖盗版光碟的商贩,此外还做拧门撬锁的勾当。克布带着比尔潜入了陌生人家中,但比尔发现克布根本不取财物,而是寻找主人蓄意掩盖的隐私。同时,克布还提醒比尔要注意仪表。后来,比尔认识了一个神秘的金发女人(露西•拉塞尔 Lucy Russell 饰)。在酒吧,比尔主动与她调情,但是对方冷若冰霜。原来她是黑社会大佬的女人,但是不可遏制的激情让比尔失去了理智,从而堕入了万劫不复的深渊……An older man listens to Bill's story about being a callow writer who likes to follow strangers around London, observing them. One day, a glib and self-confident man whom Bill has been following confronts him. He's Cobb, a burglar who takes Bill under his wing and shows him how to break and enter. They burgle a woman's flat; Bill gets intrigued with her (photographs are everywhere in her flat). He follows her and chats her up at a bar owned by her ex-boyfriend, a nasty piece of work who killed someone in her living room with a hammer. Soon Bill is volunteering to do her a favor, which involves a break-in. What does the older man know that Bill doesn't?