John* is in prison. Yet five days a week, he’s allowed out. He has a job, working in a warehouse a few miles away. He can even stay at home sometimes. He’s an inmate at HMP Hatfield, an open prison ...

LONDON — It’s been a strange sort of prison break: no daring escapes, no Hollywood getaways — just inmates quietly released, by mistake, onto the streets of Britain. What once might have been an ...