So Sweet… So Perverse (1969)
Umberto Lenzi (best-known for his contributions to the Italian cannibal movie genre, including 1981’s Cannibal Ferox, aka Make Them Die Slowly) helms this riff on 1955 psychological thriller Diabolique, which has a surprisingly classy cast in Carroll Baker and Jean-Louis Trintignant. It also has a fun setting (groovy late-’60s Paris) and—as its inspiration suggests—an engaging plot about greedy deceptions swirling around a troubled marriage. Watch on Shudder.
