Horror. Starring Michael Fuith and Anka Graczyk. Directed by Marvin Kren and Benjamin Hessler. In German with English subtitles. (Not rated. 64 minutes. At Bay Area theaters.)

The intriguing and skillfully made German zombie film "Rammbock: Berlin Undead" is an odd duck in the Bay Area's movie scene: It only plays twice a week through May - at 10 p.m. Wednesdays and midnight Fridays at two AMC theaters - and it's only 64 minutes long.

It's worth seeking out. The plot is simple: Michael (Michael Fuith) arrives at a Berlin apartment house looking for his ex-girlfriend, Gabi (Anka Graczyk), when an outbreak of zombies makes him a prisoner in the apartment house, with a plumber's assistant (Theo Trebs) as his only ally.

I've always liked movies set in small, confined spaces - "12 Angry Men," "Sleuth," etc. - because it challenges a director and helps ratchet up the suspense. Directors Marvin Kren and Benjamin Hessler are up to the task. The heroes must move through dark hallways, ram through walls and shout out the window to other stranded good guys across the way in order to avoid the increasing horde of zombies. The tension builds; 64 minutes is about right.

-- Advisory: It's a zombie movie, so it's gory.