Over-the-Rhine’s now annual masquerade ball is a “night of elegant drama filled with twisted energy.” It’s got all the makings of an excellent Halloween party: fog, DJ Matt Joy, a FotoFocus photobooth, spookily themed makeup and styling from 8-10 p.m., plus hot bartenders from Bakersfield and The Eagle OTR. Dress in a traditional costume (cat, ghost, slutty vampire) or dark elegance (Elvira?); best costume wins a night at the 21c Museum Hotel.