Halloween may only come around once a year, but horror films linger on. So to keep us all in a ghoulish frame of mind, a couple of area theaters are showing some mighty macabre movies this weekend:

The Dead of Night Horror Film Festival at Inner Circle Theater is running from Friday 'til November 14, with the following shows this weekend: Friday -- "Frankenstein" at 1:30, 4:15, 7 and 10:15 and "The Bride of Frankenstein" at 2:50, 5:35, 8:50 and 11:35; Saturday -- "Poltergeist" at 1, 4:45 and 8:30 and "Evil Dead" at 3:05, 6:50 and 11:05; Sunday -- "Nosferatu" at 1:30, 5:35 and 9:10 and "Company of Wolves" at 3:55, 7:30 and 11:05. Admission is $5 for a double bill (theater cleared after second feature). The theater is at 2105 Pennsylvania Avenue NW. 331-7480.

The festival also includes a free showing of "La Jetee" and excerpts from "Dead of Night" Friday at 8 at the Hirshhorn Museum, Independence Avenue at Eighth Street SW. Call 357-2700 for more information.

In honor of the tenth anniversary of "The Rocky Horror Picture Show," the Key Theater, at 1222 Wisconsin Avenue NW, will run the film this Friday through November 7 at 7:15 and 9:30, along with matinees at 2 and 5 Saturday and Sunday. Lest you hardcore fans worry, the regular Friday and Saturday midnight showings will be running on schedule. $3. 333-5100.