O anakatosouras (1967)

A seemingly endless string of bizarrely improbable and utterly staggering coincidences start to upset the fine balance in the orderly life of Thomas Karatoulpanis--a hopeful amateur composer and a meek employee at the renowned Thessaloniki International Trade Fair. And to make matters worse, the sudden appearance of Thomas' self-confident doppelgänger is leading to false assumptions not only his penny-pinching uncle and his sour mother-in-law but also his wife for five years, Lisa. But, who is this mysterious "other"?