![](https://image.tmdb.org/t/p/original/4SDMu9BOJCVDu0z3QMMbpsdwQQb.jpg)
![](https://image.tmdb.org/t/p/w342/gydXphsV870HdOOH97g14L2ZXNV.jpg)
Deep Swimming
The team looks into the death of a terrorist 30 years previously after his daughter receives an anonymous note claiming he was murdered - an investigation that takes them right back to the Greenham Common anti-nuclear protests. Meanwhile, Sasha agrees to go for dinner with her ex-husband Ned, which he is hoping will lead to a reconciliation.
![](https://image.tmdb.org/t/p/w300/c3UQ6G23nVwsXKkWiQJzEoUjwzf.jpg)
![](https://image.tmdb.org/t/p/w300/6LihRf8EiBIFatyHzI8SuJiWCnR.jpg)
![](https://image.tmdb.org/t/p/w300/fF35haWVa6sQLMay6VGFo36Ffrd.jpg)
![](https://image.tmdb.org/t/p/w300/sx8XWXn1OWPe3j8I5qUqXagAGbR.jpg)
Other episodes for this season
![Bermondsey Boy](https://image.tmdb.org/t/p/w300/sQrqIMM4pU7Kaw6hShwH6BlLysX.jpg)
![Tender Loving Care](https://image.tmdb.org/t/p/w300/njTnXZro27icGUZnstdegv7v9Sk.jpg)
![Deep Swimming](https://image.tmdb.org/t/p/w300/4SDMu9BOJCVDu0z3QMMbpsdwQQb.jpg)
![Ghosts](https://image.tmdb.org/t/p/w300/fMcpPRiVbWqq38Zr9QcR0XvITFF.jpg)
![London Underground](https://image.tmdb.org/t/p/w300/pP0axc1CHdBtiXvvUeI07b5M54r.jpg)
![Roman Ruined](https://image.tmdb.org/t/p/w300/eimqOYlpZySNgsSnmiHeFzj2ZbC.jpg)
![In Vino Veritas](https://image.tmdb.org/t/p/w300/29dLJZLyXQl6LfExIm98TsJxcrd.jpg)
![The English Defence](https://image.tmdb.org/t/p/w300/bbsW5DmDJWMnndfzVYpPAIn1B20.jpg)
![Breadcrumbs](https://image.tmdb.org/t/p/w300/q5UeFKF4OXgVVkIjSRJefwhdnvM.jpg)
![The Queen's Speech](https://image.tmdb.org/t/p/w300/upuqk7lApTBEou6K6Ofhy2EfDm6.jpg)