The Portrait of Doreene Gray
The team from Tripping Magazine is investing another (possibly) weird occurrence, this time involving a pair of twins—one who appears not to be aging (much) and her sister who is. Oddly, the portrait of the younger looking one, which she keeps in a locked room, appears to be tolling the years in her stead. Her sister, who painted the thing years ago, claims not to understand why.
This is a Scooby-Doo kind of mystery, with a team of investigators looking at clues to figure out what’s really going on. Their leader (editor of the magazine) is biased toward finding the most woo-woo version of events possible. The chief writer is far more practical, and the sexy photographer is mainly in it for the fun. I wish there were more books in this series. I find them quite enjoyable.