A middle-aged professor's young bride and his assistant plan to commit a double murder disguised as a "Crime Passionel", but discover too late that one of their intended victims has become a fellow conspirator.
Acting
Pryce's wounded arrogance vs. Lunghi's lethal charm.
Writing
The title's insect metaphor pays off viciously.

Director
Jack Gold
Trivia, insights & behind the scenes
Adapted from Hubert Monteilhet's novel, previously filmed as The Sleeping Tiger (1954) — Gold's version restores the French setting and nastier ending.
The 'praying mantis' archetype haunted 1980s erotic thrillers, but this TV production predates Basic Instinct's mainstream explosion by a decade.