At Halloween, a gift from Tom haunts Nikki, who's feeling guilty about Carl; Amanda's strange behavior spooks the staff; and Jake's scared silly over the prospect of a test.

No synopsis.

It's Parents Weekend, and wouldn't you know that the woman who picks Tom up in a bar for a passionate one-night stand turns out to be -- Zoey's mother.

Tom is helped over a crisis of professionalism by spectral pep talks from the characters of Welcome Back Kotter.

Cupid's arrow is especially sharp on Valentine's Day: Carl breaks up with Nikki, Nikki blames Tom, and Ronald just wants to call the whole thing off and celebrate Lincoln's birthday instead.