Edie's biggest fear is realized when Carlos walks out on her; Susan finds Mike's father, who was thought to be dead; and a delivery at a Halloween party catches the Wisteria Lane residents by surprise.

A mysterious stalker from Adam's past shows up on Wisteria Lane; Danielle's baby puts stress on Bree and Orson's marriage; Lynette has a reunion with her long-lost stepfather; Gaby and Carlos try to figure out how to explain Victor's disappearance.