Hunt for the elusive Night Watcher: Police release chilling footage and audio of prolific masked robber as he pistol whips and ties up screaming woman in her own home in terrifying £1.5m raid

The voice of the elusive 'Night Watcher' can be heard in new CCTV video of his latest crime in which he pistol-whipped a 63-year-old woman in a £1.5millon jewellery raid near Sevenoaks in Kent.