The Black Monastery

People used to come to the small Greek island of Palassos for the historic ruins. Now they come to take drugs and party all night. But the horrific ritual murder of a boy in the grounds of an old monastery brings back memories of two similar deaths in the mid-1970s, and of a mysterious cult who once dwelt in the island's interior, memories the island has tried hard to forget.

As Nikos, the police chief who has been persuaded back to his home island for the final years of his career, begins...