The cat who turned on and off

SUMMARY: The team of Koko, the brilliant Siamese cat, and Qwilleran, the reporter with the perceptive moustache, is back in action -- with an adorable female Siamese, Yum Yum, added to the household.When Qwilleran decides to do a feature series on Junktown, he gets more than he bargained for. Not the dope den he anticipated, Junktown is a haven for antique dealers and collectors -- as strange a lot as the crafty reporter has ever encountered. When a mysterious fall ends the career -- and the life -- of one of Junktown's leading citizens, Qwilleran is convinced it was no accident. But, as usual, it takes Koko to prove he's right.