The Carnelian Moon — John Michael Greer

Occult detective Ariel Moravec investigates an ancient artefact and a disappearing dog... When Ariel Moravec and her grandfather are called to investigate the provenance of an ancient relic at the Heydonian Museum, it hardly has the makings of a thrilling or dangerous case. But mysterious happenings are afoot across town; there have been sightings of a shadowy dog that disappears when photographed, and as she goes about her business, Ariel has the distinct feeling that she is being followed. Drawn deeper into the case, Ariel can't help but wonder what relation these happenings have to Leonora Blake, Dr Moravec's deceased tutor of magic, who penned the mysterious novel 'The Carnelian Moon'. As it approaches full moon, Ariel and her grandfather race against unknown forces to unveil the conspiracy surrounding the relic before it disappears forever...