Halloween
S1, E4: Up for a promotion at her teaching job, Liz invites her boss and his wife over for drinks on Halloween, when they arrive dressed in stereotypical vampire costumes, much to Charles' annoyance.

S1, E4: Up for a promotion at her teaching job, Liz invites her boss and his wife over for drinks on Halloween, when they arrive dressed in stereotypical vampire costumes, much to Charles' annoyance.