![Catacombs](https://image.tmdb.org/t/p/w185/4XCKGjc7prSSij4WmV5pKkmwfRe.jpg)
The San Francisco area is beset by a series of seemingly random murders without motive or pattern. The police are taunted by phone calls and letters. Could the maniac be the violent, truck driver, or the seemingly mild-mannered mailman, or even a cop?