December 2016's free offering from the Tor.com ebook of the month club is The Towers of Sunset, by L.E. Modesitt, Jr. This is book #2 in the author's "Saga of Recluce" fantasy series. From the Amazon.com blurb:
Creslin, son of the Marshall of Westwind, flees an arranged marriage; is enslaved by the White Wizards, escapes, and enters a marriage of convenience to Maegara, the white witch. Their attempt at building a new life and society brings untold dangers, and threatens to shift the balance of the world, leading to consequences both expected and unforeseen.
L.E. Modesitt, Jr.'s bestselling fantasy novels set in the magical world of Recluce are among the most popular in contemporary fantasy. Each novel tells an independent story that nevertheless reverberates though all the other books in the series, to deepen and enhance the reading experience. Rich in detail, the Saga of Recluce is a feast of wondrous marvels.
I'm taking the blurb at its word that this can be read as a stand-alone, and thus it will become my free sample to see if I want to dive into the rest of the series. While I know I've seen Mr. Modesitt's name around for some time now, I don't think I've ever read any of his books; so I guess in my case this sort of freebie promotion is doing what it's supposed to: attracting a potential new customer.