Blood Hook (1987) 

It's time for the annual "Muskie Madness" fishing contest, and the lake is packed with hopeful fishermen. It soon becomes apparent, however, that a psychotic serial killer has also decided to join the festivities. Although the police have determined that the killer is claiming his victims by landing them with giant fishhooks, no clear suspects can be found since everyone is using the exact same hook! What is the killer's goal? And more importantly, can the murders be stopped? - IMDb


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