Part Charles Addams cartoon, part Sweeney Todd, part homage to the nightclubs of early 20th-century Europe and to Kander and Ebb’s Cabaret, Scott Keys and Robert Hartmann’s Halloween-oriented musical revue takes on assorted gruesome subjects: murder, suicide, hauntings. But the clever lyrics and a preference for parody over genuine horror guarantee the show never gets flat-out scary. Porchlight Music Theatre Chicago director Matthew Gunnels and his crack corps of singing, dancing actors consistently emphasize the material’s comic side; the show, which is celebrating its tenth anniversary, looks and feels like a Second City comedy revue might if it were written and performed by people who were goth musical-theater geeks in high school. Through 10/30: Sat 10:30 PM, Sun 6:30 PM. Then Mon 10/31, 8 PM. Theatre Building Chicago, 1225 W. Belmont, 773-327-5252. $18-$20.