Character mistake: When Liam brings up the idea about dressing up like the Monopoly guy at Xander's party, Stella says, "You can never go wrong with a top hat and a monocle." The Monopoly guy actually never wore a monocle.
Continuity mistake: At the beginning of the Spooktacular, Lucy is dressed up as a vampire. However, when Todd is playing the organ, Lucy's dressed up as a bat and then dressed as a vampire again. There's no way she can change costumes that fast.
