The Nightside series is an odd one, I enjoyed the series but it could get repetitive, the names and background details could be very imaginative but the stories themselves less so. The series is 12 books long and finished last January.
The Peter Grant series is a wonderfully written series. Starting with The Rivers of London it really should be checked out if you like Dresden. It's set in London with a newly qualified Police constable, who, after seeing a ghost near the scene of a murder gets assigned to the Met's Magical department. Book 3 was published this summer with book 4 coming next year.