A maniacal murderer "arrives by train" at the Boca dam in Santiago, Nuevo León, terrorizing the population and tourists who go out for a boat ride. Only Lieutenant Romo and his new police partner will be able to prevent more crimes in the region.
| Release Date | August 13, 1987 | |
|---|---|---|
| Status | Released | |
| Original Title | Maniático en la presa | |
| Runtime | 1h 38min | |
| Budget | — | |
| Revenue | — | |
| Language | Spanish | |
| Original Language | Spanish | |
| Production Countries | Mexico | |
| Production Companies | ||