Following a court appearance for drunk driving, Leo is required to perform unpaid work as a punishment, assisting AJ, a community worker on a run-down,largely black-occupied housing estate in South London. AJ is hoping to divert boys away from crime by encouraging them to do sports, and, though initially dismissive of Leo as a white intruder, comes to respect him after he has saved the life of Errol, a former gang member now anxious to keep his little brother Levi out of trouble. Errol has been stabbed in the leg by members of a gang from a rival estate and Leo stops him from bleeding to death. Earlier in the week a young girl called Shana Block was stabbed to death at a funfair and her murder recorded on a mobile phone. As Shana lived on the estate police sergeant Wallace involves Leo as a go-between with the suspicious residents. Also on the scene are Harry and Nikki, the latter dating Ryan, a young Scottish paramedic she met when called to the scene of Shana's death.

　　第11季共4集
　　1、Mrs McGinty's Dead 清洁女工之死
　　2、Cat Among the Pigeons 校园疑云（鸽群中的猫）
　　3、Third Girl 公寓女郎（第三个女郎）
　　4、Appointment with Death 死亡约会

戴维（Andy Serkis 饰）和皮特（Reece Shearsmith 饰）是两个一事无成还笑话百出的小人物，这两个穷极生疯的家伙绑架了某黑帮老大的女儿崔茜（Jennifer Ellison 饰），并开口索要10万英镑赎金。然而黑帮老大也不是好对付的，更何况面对的是两个什么都不会的新手。不久，曾参与策划绑架的崔茜的弟弟安德鲁（Steven O'Donnell 饰）连同两名华裔杀手赶到戴维他们的藏身地点。一来二去，形势陡然逆转，安德鲁被打晕，戴维和皮特反而成了崔茜的人质。

  BBC的关于大都会警察局“悬疑旧案”部门的喜剧。小组的头是女DS桑德拉普尔曼，既然是和旧事有关，索性就招聘了3个退休侦探：杰克把死去的爱妻埋在后院每天和她聊天，盖里年轻时有名的花心如今要和三个前妻四个女儿共进晚餐，布莱恩是个强迫症、前酒徒和阴谋论者。标题取自一句老话：“You can't teach meijubar.net an old dog new tricks（老家伙学不来新窍门）”。这帮老家伙却成功地在新时代用他们的经验和技，那些疑难案件正中了看似过时的老窍门的道。

攻击计划——黑斯廷斯警察部队遭受人员流失和士气低落，福伊尔退休后重返工作岗位，调查空军部办公室一名制图员的神秘死亡。破碎的灵魂——当地精神病诊所一名雄心勃勃的年轻医生被谋杀，工作人员和患者中不乏嫌疑人，其中许多人仍然经历着战争的恐怖。一切正常——随着最终胜利的到来，黑斯廷斯期待着完全不同的战后生活。但对于两个人来说，结局来得太早了——一个是谋杀受害者，另一个似乎是自杀。