The Moon-Spinners

A young English woman named Nikky Ferris and her aunt, Frances, a musicologist, travel to the village of Elounda, on the island of Crete. They rent a room at the Moon-Spinners Inn, though the innkeeper, Sophia, initially refuses them until her teenage son Alexis and Aunt Frances persuade her. Sophia's older brother, Stratos, not wanting any guests at the inn, questions Aunt Frances about why she chose the Moon-Spinners Inn, then reluctantly allows her and Nikky to stay one night.
During a wedding party at the inn later that evening, Nikky meets a young Englishman named Mark Camford, who invites her and Aunt Frances to dinner. He hints that Stratos is more than he appears. Mark then invites Nikky for a morning swim in the Bay of Dolphins. Later that night, Mark follows Stratos when he goes night fishing at the Bay of Dolphins. While watching Stratos, Mark is attacked.
The following morning, Nikky is disappointed to hear that Mark has abruptly checked out. While out walking, Nikky follows a trail of blood to a church basement where she finds a wounded Mark hiding. He asks Nikky to fetch some supplies, refusing to explain how he was shot. Nikky returns with a first aid kit, brandy, and a travel rug. Mark urges Nikky and her aunt to go to the nearby town of Agios Nikolaos for safety.
Returning to the inn, Nikky runs into Stratos, who is looking for her after learning about the missing items from Aunt Frances. Stratos sees through Nikky's cover story and searches the church, which is empty. Stratos ties Nikky up in a windmill while enlisting his crony Lambis to find Mark. Mark and Alexis later rescue Nikky.
Nikky and Mark take refuge in the ruins of an ancient temple. Mark reveals he is a former bank employee. While transporting jewelry from the bank to the Countess of Fleet, he was attacked and robbed, then fired. Mark believes Stratos stole the jewels and hid them somewhere in the Bay of Dolphins.
The duo spend the night hiding in the temple while Stratos hunts for them. The next morning, the British consul at Heraklion, Anthony Gamble, finds the pair and takes them to his summer villa in Agios Nikolaos, where his wife, Cynthia, looks after them. Anthony, who is actually Stratos' partner in crime, assures Stratos that he will deal with the couple.
Nikky learns from the Gambles that a rich woman named Madam Habib is arriving on her yacht. Mark surmises that Stratos intends to sell her the stolen jewels. Cynthia drugs Mark so that the Gambles can send him, along with Nikky, to an Athens hospital. En route to the airport, Mark awakens, tells Nikky he has to stop Stratos, kisses her, and leaves. He fights Stratos but fails to prevent him from absconding with the jewels. Nikky steals a motor launch and heads to Madame Habib's yacht.
Nikky tells Madam Habib that Stratos is a thief and is selling stolen jewels belonging to the Countess of Fleet, who happens to be an old friend of Habib's. Stratos arrives for the transaction. Mark, Frances, and Alexis arrive with the police and a fight ensues. Stratos is arrested and Madam Habib returns the jewels to Mark. Alexis leaves by boat, waving at Mark and Nikky, implying that they will be married by the time they return to Crete.