The Cat Who Knew A Cardinal by Lilian Jackson Braun
Trouble literally lands in Jim Qwilleran's own backyard when the local theatre's universally disliked director is found dead in Qwilleran's apple orchard. Qwilleran and his two feline detectives search for an actor who is playing the part of a killer.
The Cat Who Played Brahms by Lilian Jackson Braunby Lilian Jackson Braun
Reporter turned detective Jim Qwilleran heads for a cabin in the country with his two cats, Koko and Yum Yum. But from the moment he arrives there, things turn strange. Soon Qwilleran enters into a game of cat and mouse with a killer and Koko develops a fondness for classical music.
The Cat Who Had 60 Whiskers by Lilian Jackson Braun
Moose County, 400 miles north of everywhere, is in an uproar (good and bad) following vast inheritances from wealthy old families. Only "Cool Koko" knows what's happening . . . and he's not telling. Jim Qwilleran thinks it's because he has more whiskers than ordinary cats, but who's counting?