Imagine if suddenly, and completely without warning, the world experienced a total blackout – no electricity, no mobile phones, no banks, no internet, no TV, no emergency services. Nothing. Highways quickly become jammed with cars that have ground to a halt; an aeroplane falls from the sky; a satellite view of the planet shows it rapidly plunging into darkness. As it becomes apparent that the lights are never coming back on, nations are plunged into chaos, mass riots break out in major cities and, without electricity, governments are toppled. Into the vacuum step ad-hoc militias, armed and ready to enforce...