David Mitchell, award winning author of Cloud Atlas, discusses his translation of the Japanese memoir The Reason I Jump, and how it helped him make sense of his son's autism. The teenage author, Naoki Higashida, has severe autism and provides an insight into that world, addressing topics such as beauty, time, noise, and how he feels about the people around him. We also talk to the mother of a profoundly autistic teenager and hear her reaction to the book.

The Reason I Jump by Naoki Higashida and translated by K. A. Yoshida and David Mitchell is published on 4 July by Sceptre