What is the scariest Mary downing hahn book?

i didnt read all of her books but i know some the ghost of cruthfeild hall,the doll in the garden,wait till helon comes,and deep and dark dangerouse i was at library at school and i wanted to read it cause the cover looked scary but my friend sydney had dibs on it so i got her it so i read the doll in the garden good book im reading the ghost of crutchfeild hall mary downing hahn writes ghost storys