Knife Of Ice. 1972.
A woman who witnessed her parents being killed when she was a child is now mute and still tormented by the memories, finds herself in the middle of a grizzly murders around her.
This isn't gory as other Lenzi films or full of nude women but certainly enjoyable, Carroll Baker plays the adult Martha decently even though she has no dialogue is able to be a good mime artist with her character. This does have a few decent twists as you think the killer is one person then jumps to another then you get the final reveal of the killer. This does have a good direction with cinematography and and haunting background score. Worth a watch.
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