The Nantucket series (also known as the Nantucket trilogy or the Islander trilogy) is a set of alternate history novels written by S. M. Stirling. The novels focus on the island of Nantucket in Massachusetts which was transported back in time to 1250 BC due to something called "The Event". Shortly thereafter a conflict develops between the democratic Republic of Nantucket and a group of renegade Americans led by the ex-Coast Guard lieutenant William Walker.