![](https://image.tmdb.org/t/p/original/oNm44BJ3XppZSSuncyddpj407im.jpg)
![](https://image.tmdb.org/t/p/w342/vc68Kp1PJmgcTT0D1a1aRsn3CAy.jpg)
A Rush of Blood to the Head
The squad investigates the source of a new batch of uncut heroin following four drug-related deaths in the city.
![](https://image.tmdb.org/t/p/w300/oNm44BJ3XppZSSuncyddpj407im.jpg)
Other episodes for this season
![Lest Ye Be Judged](https://image.tmdb.org/t/p/w300/oNm44BJ3XppZSSuncyddpj407im.jpg)
![King of the Castle](https://image.tmdb.org/t/p/w300/oNm44BJ3XppZSSuncyddpj407im.jpg)
![Nine 'Till Five](https://image.tmdb.org/t/p/w300/oNm44BJ3XppZSSuncyddpj407im.jpg)
![Pause for Thought](https://image.tmdb.org/t/p/w300/oNm44BJ3XppZSSuncyddpj407im.jpg)
![A Rush of Blood to the Head](https://image.tmdb.org/t/p/w300/oNm44BJ3XppZSSuncyddpj407im.jpg)
![Sweet Dreams](https://image.tmdb.org/t/p/w300/oNm44BJ3XppZSSuncyddpj407im.jpg)
The squad investigates the source of a new batch of uncut heroin following four drug-related deaths in the city.