It’s a sprawling series of seven novels written between 1982 and 2004. (An eighth interstitial novel was released in 2012.) The first four books were published every four to six years. But after Mr. King was hit by a minivan in 1999 and almost died, he decided to finish the saga lest another accident finish the job. The final three books were published in 2003 and 2004.
Characters from the “Dark Tower” books have frequently appeared in other stories by Mr. King (one of the series villains is also the main antagonist of “The Stand”), and vice versa, effectively making the series the backbone of the author’s oeuvre. Mr. King himself also makes an appearance in the novels, which still comes as a surprise even if you know about it beforehand.
