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Nainen on valttia is a 1944 Finnish black-and-white comedy film directed by Ansa Ikonen. It was Ikonen's only directorial effort. The film is based on an original screenplay by Mika Waltari, revolving around a young woman who transforms the lives of three bachelors upon arriving at their home. The woman, a fugitive from the police, is revealed to be a famous operetta star named Kirsti Kalpa. She manages to conceal her identity—at least temporarily.