When I feel that I'm going to write a detective story, I buy a five pound box of chocolates and a ream of paper. When the candy is all gone and the paper all used up, I know that the book is long enough.

When I feel that I'm going to write a detective story, I buy a five pound box of chocolates and a ream of paper. When the candy is all gone and the paper all used up, I know that the book is long enough.