Requiem for a Killer

Lucretia is a killer for hire, specializing in poisoning and passionate about opera, who must fulfill a difficult contract in the Swiss Alps by posing as a singer at the Festival d'Ermeux and killing one of her partners, Alexander Child, played by Christopher Stills. However, she faces complications when Rico, sent by French contra-espionage, tries to infiltrate the orchestra to stop the plot against Alexander Child.