I just finished reading the all three books that are currently available in the Morris & Chastain Supernatural Investigations series by Justin Gustainis. I have no complaints about Black Magic Woman or Evil Ways, which hang together pretty closely.
Sympathy for the Devil, though, ended with a cliffhanger! How dare he! The reader is left completely unsure of the fate of one of the main two characters, as well as several others who were pivotal to the plot. Honestly, anybody who is reading volume three of a series has proven enough commitment that there’s simply no justification for such a cheap tactic. Bah!
Ooo! Bad Author! No Author Biscuit!
That is a throw-against-the-wall offense, that is.