Daria has a confession to make – a secret from her past that haunts her every night.

An environmental thriller starring Pearl Mackie, Tanya Moodie and Pippa Haywood.

Theme music by Bonobo.

Written by Timothy X Atack.

Director: Becky Ripley

Each episode comes with its own talk and soundscape.

And you can take part in our interactive experiment to see how you respond to sounds of nature at: bbc.co.uk/forest

#Forest404