Writing a series is tricky. You're developing characters from book to book, but at the same time, each installment needs to stand alone. Finding the right balance between backstory and new action can be a challenge.
Unfortunately, in Perdition House, Kathryn R. Wall doesn't completely succeed in meeting this challenge.
I picked the title at a used book sale, intrigued by the setting and the cover. Indeed, Ms. Wall's evocation of the South Carolina Low Country is one of the book's strengths, and I do love a novel with a strong sense of place. I didn't realize the mystery was the third in a series. Once I started reading, alas, the author wouldn't let me forget this. I found the frequent references to events that had occurred in previous installments distracting rather than enlightening. It would have been sufficient to explain, once, that heroine Bay Tanner's husband had been murdered and that she barely escaped with her own life. I was not likely to forget this; the author did not need to keep reminding me!
The characters in Perdition House are vivid and skillfully drawn, especially the "shirttail cousin" Mercer and Bay's elderly Aunt Eliza. The plot, on the other hand, felt contrived and implausible. The final reveal was just too neat, all the threads unified, all the disparate villains in league. I also detected a note of anti-environmentalist sentiment that grated, though of course every author is entitled to his or her own political opinions.
Perdition House was a sufficiently diverting read for a four hour train trip, but ultimately I found it a bit disappointing.