Dubious Agent (1975)

After a failed mission, the British former secret agent, Robert Mason, reluctantly accepts one last but extremely dangerous assignment, in high hopes of redeeming himself. Against the backdrop of a rare and very important meeting between an Israeli and an Arab diplomat, Mason embarks on a perilous journey from London to Geneva to Greece, as covert double agents, the Greek Police, and ruthless assassins threaten not only the mission's success but also Robert's life. Now, in this dirty ballet of spies, two alluring women pose as friends; however, there's more to them than meets the eye. Can they be trusted?