You Get Dandruff

So, why is Santa having his elves pound the dickens out of Tony Mandolin? And why are all the heads of the Bay Area's Organized Crime Families asking Police Captain Monahan to have Tony deal with an interloper who is taking their empires down one by one?

Someone or something is messing around with the spirit of Christmas, and Tony Mandolin, San Francisco's Private Eye for the weird has been chosen to solve the problem. Ho, ho, frickin' ho.