Eye in the Labyrinth (1972)

Chilling horror!

Julie is disturbed by the disappearance of her psychiatrist boyfriend Luca following a bizarre dream where she witnessed him murdered. She travels to a seaside village where he might be and encounters Frank, who tells her Luca has indeed been there. Julie's investigation leads her to the house of Gerta, where the mystery deepens among the odd characters residing at this artists enclave.