A Deadly Learning - The "Diana Rivers" Mysteries, #6

A Deadly Learning' - Faith MortimerWhen sleuth and private investigator, Diana Rivers travels to Portugal for a holiday, murder is the last thing on her mind. On the first day of her visit, nothing bodes well at the International College of Portugal when a woman's body is found interred behind a wall during renovation work. The striped plastic tape around the crime-scene portrays a sense of profound unease.
What with students practicing sexual rituals in the sand dunes, a suspicion of a drug factory and money laundering plus a rash of killings, her plans for a quiet break go awry. Diana is in her element.