Punishment Island (Captive's Island)

A young man returns to the island where he was held prisoner as a child. He was sent to the island as a boy so he could not reveal the identities of the military police who killed his family. For 20 years he has planned to seek revenge against the sadistic tormentor who tortured the island inhabitants. He meets the daughter of the torturer, and the young woman claims her father has changed his ways.