This mystery concerns the death of a nun (actually more than one nun) and the young girl who is caught up in the mystery. I particularly liked the us of linked art work.
I did find the character of Nicola, at times to be inconsistent with her age. And Juana the Mad was not the only children of Isabella and Ferdinard (perhaps at the time the book is set, she was the only child still living).
Still, it was fun.