When his son cannot spend the holidays with him, a melancholy Frasier learns the true spirit of Christmas from a group of strangers.
Will and Carlton's plan of having the house to themselves with two sexy French girls is spoiled with the unexpected visit of Will's Aunt Helen.
Will becomes childishly jealous when his mother arrives for a visit--with a man who could easily become Will's new stepfather.
Cole and Phoebe both fall under the spell of the Siren, who lures husbands to her and entrances their wives to follow with the intent to kill, leaving Piper and Paige to figure out how to save Phoebe.
The detectives search for the killer of a particularly disreputable used car salesman. Medavoy is sickened by the murder/rape of a homeless woman.