After moving into an old mansion whose previous owner committed suicide, prize-winning reporter Qwilleran and his two Siamese cats are disturbed by strange occurrences and start to investigate when Qwilleran's old girlfriend disappears.

Inheriting unexpected millions has left reporter Jim Qwilleran looking like the cat who swallowed the canary. While his two Siamese cats, Koko and Yum Yum adjust to eing fat cats in an enormous mansion, Qwilleran samples the life styles of the rich and famous by hiring a staff of eccentric servants.

When Qwilleran decides to do a newspaper feature about Junktown, he thinks he'll be writing a heartbreaking story about a dangerous, run-down neighborhood. To his surprise, however, Junktown turns out to be a haven for Moose County's eccentric antique dealers and collectors. Qwill is almost ready to give up on his story when one of Junktown's leading citizens is killed in a mysterious "accident".

Jim Qwilleran is not exactly thrilled by his new assignment for the Daily Fluxion--a weekly magazine on interior design. But Qwilleran finds himself on familiar territory when a murder is committed, and he and Koko, the brilliant Siamese, take the case.

Jim, Qwilleran, Koko and Yum Yum go to Peaceful Pear Island to investigate suspicious happenings that resulted murders around the island.

Millionaire newsman Jim Qwilleran and his two Siamese cats solve a series of murders of handymen in the resort town of Mooseville.