Unholy Sanctuary — Margaret Higgins

It was a strange sort of convent - if indeed it was a convent - for a young and unworldly girl to find herself in. For one thing, some of the nuns wore makeup - faint, but still makeup; for another, wine was served with meals; for still another, there were areas of the grounds that were absolutely forbidden to both nuns and novitiates - like the garden, where roses were planted int he dark - and dead - of night...

When Eileen Quinn found herself rebuffed each time she tried to visit her sister Caitlin, she was understandably upset. And when she finally did see Caitlin, she was even more so, for Caitlin seemed not quite with it - as if she had not only retreated from the secular world, but from the very planet!

Eileen's meeting with George Scarsdale, a young man worried about his own sister, and ex-Insp. Truffold of the Paris Surete, convinced her that Caitlin was in trouble, and that she must somehow find a way through those barred and impregnable iron gates....