Destroying Angel (1990)

A romantic comedy, centering around a feuding but very wealthy married couple, who are planning their divorce while relaxing at luxury hotels in Yugoslavia. The husband decides he wants to get rid of his wife, so he hires a hitman (played by the very underrated Michael Gothard) to do the job. However his wife also has the same planned for her husband, seducing one of her many lovers into doing the job. But if these jobs don't go as planned, the husband will have to carry on being blackmailed by his wife for his incestuous affair with his 16-year-old daughter. On top of this, the daughter has her own ideas, but things don't go quite as hoped.