Thrill, brrrr...

Yesterday finished the book by Brigitte Aubert The Four Sons of Dr. March. Now that was a nice thrilling story!
Jenny, a maid at Dr. March's place, finds a diary of a sadist murderer who lives in the house, the only problem is who out of the doctor's four twin sons is this cruel maniac? The storyline holds you in  constant intense until it brings you to the completely unexpected final where the skeleton drops out of the cupboard :) Take my word, you won't regret reading that.