24 Hours of Liveliness (1969)

Louisa Ragozzi, exhausted by her husband's antics, whom she caught red-handed with her typist, pretends to have amnesia and does not recognize him. She asks their servant Petros to throw him out of the house. Her husband is worried and seeks the help of a famous psychiatrist, who tries to help Louisa regain her memory. However, he must proceed discreetly, because the "psychopath" thinks that the doctor is her husband!