• Dirk Bogarde
• George Chakiris
• Susan Strasberg

This story of love and espionage focuses on political turmoil as a small nation struggles to free itself from colonial rule, and one man tries to serve both justice and his own heart. In the late 1950s, the island of Cyprus is under the political control of Great Britain, but groups of Cypriot activists are fighting for the country's independence. Maj. McGuire (Dirk Bogarde) is an English military leader who is on the trail of Haghios (George Chakiris), a terrorist leader who guides the struggle for freedom in Cyprus. Juno Kozani (Susan Strasberg) is an American student of archeology who visits friends on the island, only to discover that they're helping to hide Haghios from the police and the British military. McGuire is convinced that Kozani knows Haghios' whereabouts, but while she has told McGuire nothing, Haghios is convinced that Kozani has turned him in and threatens to kill her. Desperate, Kozani seeks protection from McGuire, who allows her to hide out in his apartment. Put into close contact, McGuire and Kozani fall in love, but when his superiors find out that he's been keeping her in hiding, McGuire is transferred to Greece. Kozani follows him there, only to discover that a mysterious man has been following them. The High Bright Sun has also been released under the titles McGuire Go Home! and A Date with Death.