The Dresden Files: Portland
Calvin Cooley is an agent of the Venatori Umbrorum based in Portland. He was also recruited into the ranks of the Fomor and made to act as a mole for them late in 2013. He has been using a transformation potion to look like the records clerk in his headquarters to infiltrate and remove records and has been feeding the Fomor information about agents getting close to Fomor front companies.
Calvin is an incurable neat freak and an accomplished liar—just likes to keep his stories neat.