YMMV / Mermaid Down

• Complete Monster: Dr. Beyer is the head of a mental health clinic for women, and a predatory Serial Killer using his position to prey on his patients. Happening upon a fishing boat that captures and maims a mermaid, Beyer kills her captor to steal her for himself, keeping her in a tortured state for his morbidly curious study. Beyer uses his basement as a torture dungeon for his victims, who he'd feed to his ravenous guard dog. When the mermaid soon regrows her tail, Beyer soon realizes the jig is up and begins coldly gunning down his fleeing and hiding staff and patients. Taking the restored mermaid aboard his boat, Beyer plans to dissect her "fish parts" to see how they work, desperately trying to take her rescuers down with him when beaten.