L'homme de Mykonos (1966)

In Belgium, Silvio Donati, a young painter, meets Dorothée Yanakov, a rich woman, older than him. Tempted by her money, Silvio marries her. After a time, while in Mykonos for business, Silvio comes across Pascale, his former mistress. Soon, their flame is rekindled and Dorothée instantly becomes a disturbance. The only way out for Silvio is to get rid of his wife...