Scrolling through Twitter on his phone before going to sleep on 22 May 2017, Dan Hett saw a few vague mentions of an accident of some sort in Manchester: "no details, no actual news, just busybodies speculating." He rubbed his eyes, removed his glasses and lay down without thinking about it any further. It wasn't until he picked up his phone the following morning and saw hundreds of notifications that he realised something real had happened, that there had been an explosion, and that his brother Martyn was missing. "The messages, the ones you read … they were right, and you went to sleep," said a voice in his head. "You went to fucking sleep."