The Herbert West Series began with an obsession-driven novel, The Friendship of Mortals. When that was finished, I didn’t want to say goodbye to the main character so wrote another really long book set in an entirely different location with different supporting characters. I decided that book was too long (230K words, as I recall), so chopped it in two, making an instant trilogy. But the story kept going in my mind, so I whisked the title character to yet another location and reunited him with two characters from the first book. Fine, except now it was no longer a trilogy. I thought “tetralogy” sounded lumpy and angular, and “quartet” was too musical, so I settled on “series.”
Except that suggests a procession of books with no intended conclusion, and my story has a definite conclusion at the end of the fourth book. True series have more uniformity: same genre, same point of view, similar challenges for the main character. Whereas mine started as a kind of horror story and evolved (some would say devolved) into a mere adventure with supernatural and symbolic overtones. And while the pov is always first person, there are 5 (or maybe 6) different narrators. Each one delivers their own experiences with the main character. His name changes at the end of the first book, but references to the previous name are frequent enough (I hope) that the series title isn’t confusing.
Then there’s the numbering. Books 2 and 3 of the series are also Volumes 1 and 2 of what was a single book (Islands of the Gulf) until the big chop.
Are you confused yet?
If not, consider also that the series has a two-book sequel of sorts (well, it will be two books once I publish the second one). And there’s a short story collection, half of which is “spin-off” stories from the series.
The about-to-be-published book (She Who Returns) will be the finale of this saga. Although it takes place half a century after the first book (The Friendship of Mortals), it revisits some of the places, characters, and situations of that book, as a kind of farewell gesture.
In retrospect, I should probably not have called the four books a “series.” Maybe something like “A Herbert West Book” applied to each one would have been enough. And I should have rigorously reduced the middle book and preserved the trilogy.
“Shoulda, woulda, coulda.” Too late now. The books–all 6 and soon to be 7–are what they are.