Always remember when dealing with accountants, dull and boring is not the same as stupid. Loose threads get snipped as betrayals come to the surface in the heartwarming bloody climax of Vampire Holidays.   
I was enjoying the series, but reading this final chapter is what made me fall in love with it.  All the little details align in a deeply satisfying manner.
From Vivid Publishing just in time for Valentine's Day, snag VH5 on Kindle, nook, e-book format of any type for a buck:

And if you're behind, catch the first installment free: 
The whole bloody romance begins and ends with Valentine's Day.