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