blackmail and secrets

Hitchcock mastered psychological suspense through blackmail plots and hidden secrets that torment his characters, most notably in 'Rope' and 'Vertigo'.

Wilder explored moral corruption and blackmail schemes with dark wit in films like 'Sunset Boulevard' where secrets about the past destroy lives.

De Palma built his career on psychological thrillers that obsess over voyeurism, blackmail, and the dangerous secrets people keep, as seen in 'Blow Out' and 'Body Double'.