Crime of Passion.

Hungary: Callously leaving her handicapped daughter home alone, Sonya meets her lover at a hotel and is later shot to death. At her funeral, the main suspects are all present: Peter, Sonya's estranged husband; Tanya, her sister; and Julia, a business associate. The police inspector is assigned to the case discovers that Peter is sexually involved with both of the aforementioned women. Further murders ensue...