(dramatic music) - They've got suspected human remains found in Whitney Marsh.

- [Sinead] So, the case this year, the body is found in marshland.

- And not many body parts.

A leg and a bit of spine.

It's actually a clue that the pathologist finds that begins to open up how this person met their end.

- The victim, we find out, is a man called Jared Cooper.

- Who has had various relationships with different people in different capacities.

- [Sanjeev] We are trying to find out what their links to each other are, what their links to the victim are, and ultimately, which one or ones did it.

- [Victoria] What we went through was a pretty seismic event.

When you meet Juliet, she is working at Central London University as a modern history lecturer.

And she has one daughter, Taylor, who she has a difficult relationship with.

Juliet gets a visit from the police to say that they have DNA tested the body parts and it turns out it is the body of her husband who went missing four years previously.

Always knew he hadn't jumped.

- [Elham] My character, Asif, is an Afghan refugee who has come to the UK for a better life and he works as an interpreter.

The season finds him at a place in his life when he's just about to cement his new life by becoming a British citizen, and that's when things start to go wrong, and he feels that this world that he's built is slowly collapsing around him.

- So, that's it for me.

Until next time.

Melinda Ricci is a quick fire, opinionated presenter for a TV station, which supports very far right views.

She has relocated from London where she used to work and she is now based on Ireland.

Her life is changing, and she has found the love of her life who she's about to marry, and then her past comes knocking on the door.

- [Maximilian] So, Marty, he's living with his mother.

Very, very isolated figure.

He's on the autism spectrum.

Very much lives in a world which doesn't necessarily understand him.

Marty and his mother are very close for him.

She's very much an anchor for him, but it's also a big source of stress.

- The script's complex.

There are lots of characters.

That's a lots of plates that are spinning.

- [Chris] Both Andy and I, essentially, our heart believe most people are basically decent, but circumstances in life, you know, sends them off track.

- [Andy] And it's not heroes and villains.

There are shades of gray all over the place.

That's what makes it fascinating.

(piano music)