The Cat Who Lived High — Lilian Jackson Braun

The colorful Casablanca apartment building is in danger of demolition--but not if Jim Qwilleran can help it. He's determined to restore the building to its original grandeur So he- moves in with Koko and Yum Yum--and discovers that the Casablanca is steeped in history... and mystery. In Qwill's very apartment, a glamorous art dealer met an untimely fate, and the veteran journalist and his crime-solving cats are about to reach new heights in detection as the evidence builds up ... and the Casablanca threatens to crumble down around them!

Qwilleran--a prize-winning reporter with a nose for crime. Koko--a Siamese cat with extraordinary talents and a flair for mystery. Yum Yum -- a lovable Siamese adored by her two male companions. The most unlikely, most unusual, most delightful team in detective fiction!