Lilian Jackson Braun's "The Cat Who...Series" Books 10-14:
The Cat Who Talked to Ghosts (1990), 239 pages; The Cat Who Lived High (1990), 239 pages; The Cat Who Knew a Cardinal (1991), 240 pages; The Cat Who Moved a Mountain (1992), 239 pages; The Cat Who Wasn't There (1992), 238 pages.