If you go, I don't think you should come back.On a startlingly bright autumn night in 2006, Harper Regan walked away from her home, her husband and daughter, and kept walking. She told nobody that she was going. She told nobody where she was going. She put everything she ever built at risk. For two lost days and nights, until it looked as though her entire life might unravel, she didn't turn back.From Uxbridge to Stockport to Manchester and back again, Harper Regan navigates the UK, exploring family, love and delusion. It received its world premiere at the National Theatre, London, in 2008.