| english title | Guinea Pig 4: Mermaid in a Manhole |
| original title | Za ginipiggu 4: Manhoru no naka no ningyo |
| year | 1988 |
| country | Japan |
| director | HINO Hideshi - 日野日出志 | |
| actor | RIJU Go | |
| SOMEI Mari | ||
| SAIKI Shigeru | ||
| HISAMOTO Masami | ||
| PETER | ||
| OGAWA Natsumi |
| genres | horror category III |
| duration | 57 mns |
