Back in Funeral Black - The Chronicles of Henry Mack, #1

It's not easy having a zombie for a sister, but it does come in handy sometimes.Henry MacDonald-Mack to his friends-is the best-looking catch and dispatch officer to ever liaise with the Scottish Otherworld and Paranormal Department, if you ask him. Of course, no one did, especially not his (un)dead sister Ollie. Still, it's a blow to be kept off the latest case: the murder of his own Granda. The death of the esteemed wizard must be avenged.
The murderous demon summoned to kill him, stopped. And the growing divide between certain factions in the unseelie inhabitants of Glasgow must be quelled. There's also the task of tracking down that bit of magic that might Ollie back to life properly. Oh, and paperwork to be lodged for the apprentice Mack has taken on. If only he could find that pen.