Blind Corner

Paul Gregory (William Sylvester) is a brilliant composer despite being blind. His marriage to Anne (Barbara Shelley) seems to be perfect but unbeknownst to Paul, his wife is having a sordid affair with struggling artist Ricky (Alexander Davion). When Paul senses a connection between Anne and Ricky, he threatens to cut his wife off from his wealth, leading Anne to begin calculating a formula for his murder... (official distributor synopsis)