To say that Agatha Christie’s characters are cardboard cut-outs is an insult to cardboard cut-outs.
Let your characters talk to each other and do things. Spend time with them - they'll tell you who they are and what they're up to.
Also, as an author, character has always been what I'm most interested in - much more so than plot or setting, although those are good things too.
I think one thing that always attracted me to movies was the personalities. I went to movies not because the stories necessarily appealed to me, but because of the people in them.
I believe in characters that can be tangible, and that you can actually relate to.
I don't think about the stories so much, as the characters themselves. They live on, and they are almost as real as I am.
If there is a connection between Harry Potter and my new novel, it's my interest in characters.
My characters, I find them as I'm writing. It's quite incredible how fully realized they are in my mind, how many details I know about each of them.
When you get into individual characters certainly there's been things that have been updated .