Series 4

DCI Murray has to choose between Janet and Rachel. When a photo of a young man in the boot of a car appears on Facebook, it looks like he is already dead.

Syndicate 9's new sergeant is thrown in at the deep end with a historical missing person's case. Janet shares a secret with Rachel - she wants a boyfriend.

Janet goes on her first date. The murder of a gay man has all the markings of a hate crime, but why is his friend struggling to answer some simple questions?

When a woman is found dead in a hotel room, the ads on a website might hold the key. Rachel enjoys her secret affair and Janet investigates speed dating.

When an unconscious baby is admitted to hospital, staff are concerned that his injuries do not match his parents' explanation.

Janet tries to mend Elise's broken heart. When a couple are murdered in their pub, enquires uncover unexpected family secrets.

A body on the moors leads Janet and Chris to a shocking discovery. While Rachel and Janet harbour concerns about Gill's behaviour, their own actions come under investigation.

The discovery of slaves on the Pritchard farm has turned a murder inquiry into a huge, multi-agency investigation.