Anna awakens in a fright, tied up bound by the Invisible Strangler! Her hands tied behind her back and a cloth wrapped tight around her mouth to keep her quiet. Left on a couch in just a bikini, Anna has never felt more vulnerable and exposed… She struggles against her bindings and calls out from behind the gag as she wiggles to get free. Kicking her bare feet and turning this way and that in terror. Eventually Anna is able to get her hands free and quickly removes the gag and tries to leave. But the Invisible Strangler has been watching her close! He takes his chance to strike and lashes out at Anna, wrapping his hands tight around her delicate throat. Anna gasps in terror as she is strangled. Moving around the room trying to get free, gagging and coughing from the crushing pressure. She is brought onto the couch where her struggle for life continues, trying to stand and escape but forces back down as she cries out in agony. After a relentless struggle the Strangler conquers his victim and she falls back dead on the musty couch with her eyes frozen open.