John Sutherland joined the Met in 1992, having dreamed of being a police officer since his teens. Rising quickly through the ranks, he experienced all that is extraordinary about a life in blue: saving lives, finding the lost, comforting the broken and helping to take dangerous people off the streets. But for every case with a happy ending, there were others that ended in desperate sadness, and in 2013 John suffered a major breakdown Blue is his memoir of crime and calamity, of adventure and achievement, of friendship and failure, of serious illness and slow recovery.