Kirsten and Mark discover an unconscious beauty, adrift in a boat. With Erik's assistance, she is taken to stay with the Shepherds. Krasakis identifies her as Julie Johnson, a visitor travelling with an unconventional couple, the destructive Val Griffith and her lover Nat. Ann's curiosity, and ultimate annoyance, is aroused when she learns that Erik shares a notably intimate past with Val.

Kirsten and Mark are attacked following a tryst on the beach, so the Mervishes invite the young couple to stay with them to recuperate. They accept but slowly find themselves captive in a sadistic psychological experiment.

Culley reveals the true reason for his return to Aghios Nikolaos and sets about to destroy the Shepherds' marriage. Pushed to the breaking point and left with an ultimatum, Ann makes a desperate decision which culminates in two murders and an escape.