The Muffler's Ministry. The Mufflers, #1

Everyday low-level magic is commonplace, the only thing forbidden is technology. The ruins of the old world serve as a constant reminder of why humanity must never venture down that path again. Rowan Webb is recruited into the secretive Ministry responsible for ensuring technological advancement is suppressed - The Mufflers, who turn out to be a surprisingly friendly and eccentric bunch. Venturing out into the community with a familiar called Pythia, Rowan has every intention of having as good a time as possible while working undercover.
For most people, society is fair and comfortable. It seems the perfect opportunity to enjoy life with old flame Tia Tobin.?Pythia puts a damper on things by making Rowan document the journey, just in case there's an enquiry later. Then the shadows of the past re-emerge to really ruin the fun - and threaten ultimate destruction. Tia's not happy with Rowan either.