Tamir Kalifa for The Boston Globe

Audience members waited in line outside for a midnight showing.

Tamir Kalifa for The Boston Globe

"The Rocky Horror Picture Show" was advertised on the Marquee at the Harvard Square Theater.

Tamir Kalifa for The Boston Globe

Arthur Laurie and Meredith Wish lined up to enter the theater.

Tamir Kalifa for The Boston Globe

Part of the scene outside the Harvard Square AMC theater before a midnight showing.

CS Owsley

Attendees of the Halloween showing of "The Rocky Horror Picture Show" were let into the theater just before 10 p.m.

CS Owsley

The theater was loud with excitement as fans filled the seats.

20th Century Fox Film Corp.

In the1975 film, Riff Raff (Richard O'Brien), Frank N Furter (Tim Curry) and Magenta (Patricia Quinn) attended a banquet.

20th Century Fox Film Corp.

Rif Raff (Richard O'Brien) informed Magenta (Patricia Quinn) that he was the new commander.

20th Century Fox Film Corp.

Magenta (Patricia Quinn), Brad (Barry Bostwick) and Janet (Susan Sarandon) heard weird music in the castle.

20th Century Fox Film Corp.

The Transylvanians sang "The Time Warp."