Maps, artifacts, and other arcane magic

One treasure down, two to go ... three months ago, i nearly lost my best friend while retrieving the first instrument of assassination. i also inadvertently released a rival who was definitely unhinged, way more powerful than me, and obsessed with harnessing the deadly power of the artifacts i'd been tasked by the guardian dragons to collect. add a sexy sentinel and a nearly immortal vampire to the mix, and what could possibly go wrong? knowing my luck, i was about to find out. maps, artifacts, and other arcane magic is the fifth book in the dowser series, which is set in the same universe as the oracle, reconstructionist, amplifier, archivist, and misfits of the adept universe series. while it is not necessary to read all the series, in order to avoid spoilers the ideal reading order of the adept universe begins with cupcakes, trinkets, and other deadly magic (dowser 1).