
J.K. Rowling with the screen versions of her Harry Potter, Hermione Granger, Cormoran Strike, and Robin Ellacott characters (Everett/Getty/BBC).
It’s impressive enough when a novelist creates one successful series — as, say, Lee Child did with his Jack Reacher books and Sue Grafton did with her alphabet mysteries. But an author who creates two or more successful series? Wow!
Some writers produce multiple series consecutively — finishing one series before starting another. Other writers tack back and forth between different series. Either way, it takes some impressive and wide-ranging creative talent, and helps “serial” novelists stay fresh. Those authors can also feel good about readers staying with them as they offer something new.
Among the queens and kings of multiple series is J.K. Rowling. She of course penned the seven mega-popular Harry Potter books. Then, after writing The Casual Vacancy standalone novel, Rowling as “Robert Galbraith” launched her crime series starring private investigators Cormoran Strike and Robin Ellacott. I’m currently close to finishing the seventh installment — The Running Grave, in which Robin goes undercover to infiltrate a very problematic cult — and its 945 pages are full of the thrills, humor, suspense, poignancy, complications, excellent prose, and believable dialog Rowling always provides.
Walter Mosley is best-known for his detective series starring Easy Rawlins, who has now starred in 16 novels. But the author has interspersed those books with smaller series such as the King Oliver books and the Socrates Fortlow books. Mosley is always a great read, no matter who the protagonist is.
Val McDermid has gone the several-series route, too, including a compelling saga starring inspector Karen Pirie and another featuring journalist Allie Burns. Also not a clunker in the installments I’ve read.
Leaving contemporary fiction for a minute, L.M. Montgomery wrote Anne of Green Gables and its many sequels while also penning the semi-autobiographical Emily trilogy. (I consider a trilogy to be a series of sorts.)
Returning to a living author, Diana Gabaldon has gone the “sub-series” route by writing nine main Outlander novels (so far) and a number of offshoot books starring the Lord John character who’s a supporting player in the main novels.
Your thoughts about, and examples of, this theme?
Misty the cat says: “Snow means ‘Middlemarch’ author George Eliot wrote ‘Middledecember,’ too.”
My comedic 2024 book — the part-factual/part-fictional/not-a-children’s-work Misty the Cat…Unleashed — is described and can be purchased on Amazon in paperback or on Kindle. It’s feline-narrated! (And Misty says Amazon reviews are welcome. 🙂 )

This 90-second promo video for my book features a talking cat: 🙂
In addition to this weekly blog, I write the 2003-started/award-winning “Montclairvoyant” topical-humor column every Thursday for Montclair Local. The latest piece — which discusses what’s happening with my town’s animal shelter and much more — is here.