Derek Bentley was just 19 when he was hanged for a murder he did not commit. 

No, really. He didn't commit a murder and nobody is arguing that point. Not even the police. 

So how did a young man end up at the wrong end of a rope? It all came down to word choice. 

Hit that play button and follow the language evidence in the first modern case where words decided the fate for one very unlucky man.