Quinn's holiday becomes an investigation when an offbeat acquaintance disappears after making an outlandish claim. But that's not all that's amiss. Her daughter-in-law is acting like she's losing her marbles, and her parallel-life twin may have unleashed a superpower she can't control!
The Ghost Who Wasn't by Bobbie Holmes
Ghosts, Alibis, and Apple Pies by J.A. Holder
The Ghosts by Carolyn Ridder Aspenson