Lot of 2 vintage mmpb. Sold as reading copies, expect all flaws. 
ONLY A MOMENT BEFORE

Camilla Haven is on holiday alone, and wishes for some excitement. She had been sitting quietly in a crowded Athens cafe writing to her friend Elizabeth in England, "Nothing ever happens to me..."

Then, without warning, a stranger approached, thrust a set of car keys at her and pointed to a huge black touring car parked at the curb. "The car for Delphi, mademoiselle... A matter of life and death," he whispered and disappeared.

From that moment Camilla's life suddenly begins to take off when she sets out on a mysterious car journey to Delphi in the company of a charming but quietly determined Englishman named Simon Lester. Simon told Camilla he had come to the ancient Greek ruins to "appease the shade” of his brother Michael, killed some fourteen years earlier on Parnassus. From a curious letter Michael had written, Simon believed his brother had stumbled upon something of great importance hidden in the craggy reaches of the mountainside. And then Simon and Camilla learned that they were not alone in their search...

The ride was Camilla's first mistake... or perhaps she had unintentionally invoked the gods. She finds herself in the midst of an exciting, intriguing, yet dangerous adventure. An extraordinary train of events turned on a nightmare of intrigue and terror beyond her wildest daydreams.
 

***

It's all a grand adventure when English Christy Mansel unexpectedly runs into her cousin Charles in Damascus. And being young, rich, impetuous, and used to doing whatever they please, they decide to barge in uninvited on their eccentric Great-Aunt Harriet—despite a long-standing family rule strictly forbidding unannounced visits. Because when the Gabriel hounds run howling over the crumbling palace of Der Ibrahim in the Lebanon, someone will shortly die.

A strange new world awaits Charles and Christy beyond the gates of Dar Ibrahim—"Lady Harriet's" ancient, crumbling palace in High Lebanon—where a physician is always in residence and a handful of Arab servants attends to the odd old woman's every need. But there is a very good—very sinister—reason why guests are not welcome at Dar Ibrahim. And the young cousins are about to discover that, as difficult as it is to break into the dark, imposing edifice, it may prove even harder still to escape.