They do it with mirrors
Agatha Christie
Miss Marple (6)
Golem in the Gears
Piers Anthony
Xanth (9)
Serpent's Kiss
Alex Archer
Rogue Angel (10)
Key of light
Nora Roberts
Key Trilogy (1)
Bundori
Laura Joh Rowland
Sano Ichiro Mysteries (2)
Children of the Storm
Elizabeth Peters
Amelia Peabody - Pub (15)