In 1957, Juno (Susan Strasberg), an American archaeology student, is visiting Cyprus and staying with the family of her father"s best friend, Dr. Andros. She witnesses an attack by two Greek Militia gunmen which results in the death of two British soldiers, but is unable to identify the killers to the local British intelligence officer, Major McGuire (Dirk Bogarde). The Greek Militia want Juno dead and are determined to silence her while she is under the protection of the British Army.