第三季的焦点重回到活跃于街头的Barksdale团伙，同时也将视角扩展到政治领域。此外，本季当中引入Hamsterdam这一新支线剧情，以探讨在部分人烟稀少的街区对非法毒品交易及卖淫的「事实性」合法化会有怎么样的潜在积极作用。这种做法在阿姆斯特丹和其他欧洲城市取得了积极成果，减少了市内的街头犯罪。这些都是对早先情节的延续。
鹰匠和也（樱井翔 饰）从小就梦想着能够成为一名足球运动员，凭借着自己的努力和天赋，和也年纪轻轻就被选拔成为了日本足球队的代表，前途充满了希望和光明。和也和未婚妻仲川未希（长泽雅美 饰）相恋多年，即将携...
Five-year-old Connor Reid is strangled and security cameras show the two little girls who baby-sit him, Paige and prostitute's daughter Rose, take him into the empty flat where his corpse was found. In interview Paige breaks down and names Rose as the killer, though, in court, Rose's brief Kim Sharkey invites the court to accept Paige as the guilty party and forensics seem to i...