I didn't put up the covers of books in the same series that were also favorite reads in 2013 but I'll list them here:
Along with book 6 (which is shown), Kate Daniels books 4 & 5 were 5 star reads. Well, listens actually. I love the narrator on the audiobooks. Tantor Audio often has the mp3 downloads marked down to $6.99 or less. I highly recommend the listen. Obviously, I recommend the Kate Daniels series if books 4-6 were favorite reads.
Naked in Death (book 1 of the "in Death" series) made the 5 star read list as well. This is another where the audiobook is well worth the listen if you're into that sort of thing. I definitely am. Audiobooks have saved me from many a road rage incident.
Deadline is the 2nd book in a trilogy. Book 1 just missed being a 5 star but I heartily recommend the trilogy if you're into horror, sci-fi, zombies or a heart-wrenching read.