剧集是一部以迷人的伦敦切尔西区为背景的当代犯罪片，住在船屋的探长Max Arnold 虽出生在精致富有的切尔西区，但他本人行事低调的风格却与精英专属的切尔西区相去甚远。他与周围的邻居相隔一段距离，住在一艘船屋上。Max 和他的搭档Priya Shamsie探员解决了一系列骇人听闻的谋杀案，揭开了切尔西标志性建筑背后的阴暗世界。他们所遇见的尸体，出现在一些不太可能的地方，包括家族经营的意大利餐厅、与足球流氓有勾连的社区花园中心等。

Filming has begun in and around London on a four feature-length episodes in which the duo explore murky crimes such as the tragic death of a 2000s poster, the impenetrable world of the U.S. Embassy, the splendor of Kew Gardens, a classic music academy and a climate scientist found dead in a supercar. Also new is Max embarking on couples therapy with his estranged wife Astrid (Anamaria Marinca) and Layla getting used to living in London as her partner, Jon, resides in Exeter.