Hart to Hart (1979)

S1E10 With This Gun I Thee Wed

The Harts receive an invitation to the wedding of Jonathan's ex-girlfriend in Monte Carlo, only to discover she is being coerced into marrying a dangerous and manipulative blackmailer. Determined to intervene, the Harts dig deeper and expose the truth behind the wedding. In a race against time, they work to prevent the nuptials, ultimately ensuring that Nikki can unite with the man she truly loves.