Josie is visiting her mother Fay for the first time in 15 years. She's never walked into a prison before. Fay is serving life for murder.

Iron is an intense psychological drama in which a mother and daughter try to break through the barriers of time, memory and punishment which separate them.

But between them lies the fact of murder. A murder Josie cannot remember and Fay has always tried to forget. Uncovering the memories they share is more dangerous than either of them can imagine.

Iron is the latest play by Rona Munro whose previous work for stage includes, for the Traverse, Your Turn to Clean the Stair, as well as Bold Girls, The Maiden Stone and Snake. Her work for film and television includes Ken Loach's ladybird, Ladybird and the Golden Globe nominated Aimee and Jaguar. Her next film Rehab with director Antonia Bird is currently in production with the BBC.

If you're a living person, sooner or later you'll lose control of your feeling, won't you? If you're alive at all… Just never lose it with a kitchen knife in your hand, that's my advice to you.

Does it still feel like you have a daughter or is it like some woman coming to see you out of nowhere? Why did she come anyway?

You see a woman. You see your mother. The surface looks like everything you'd expect but these walls swallow people. It's just a thought but you might want to turn round and never come back.