01/04 - Where's Wait? At the end of the November 30 episode, Michael sat down at the hatch's computer and got a shock: a message addressed to "Dad." Is it really from his missing son, Walt? Or might it be the handiwork of the deadly Others who nabbed him? Our lips are sealed, but we'll get closer to an answer when someone makes a chilling return in the January 18 episode. [...] And on January 18, we'll finally learn some of the problems that plagued Jack's marriage to Sarah and why that's bad news for any romance with Kate. Source: TV Guide (Printed edition)