A 30-year-old obstetrician-gynecologist and the film's protagonist. Initially enjoying professional success and a stable marriage, she becomes convinced her husband is cheating. In retaliation, she embarks on a passionate adulterous affair with an unknown man, leading to a complex double life.
He is part of the theatrical ecosystem connected to Lena's marriage.
Katya is perceived as the source of marital betrayal, triggering Lena's suspicion.
Explore the full interactive character relationship map of Fidelity