John Birmingham’s After America is the second book in what is clearly intended to be a trilogy of page-turners – a follow-up to his Axis of Time trilogy, the swashbuckling alternative history which saw a US carrier battle group transported back in time to the middle of World War II.

After America, the sequel to Without Warning (2009), is set in a decidedly dystopian alternative present, the result of a mysterious energy wave that wipes out most of the human and animal life forms in North America in 2003. As one might expect, chaos ensues. A global ecological catastrophe has accompanied the human disappearance, a civil engineer from Seattle (the only big US city to survive the wave) has been elected president, Israel has launched nuclear strikes on its Middle East neighbours, and groups of well-organised pirates from Lagos have taken over New York City.