Danielle Steel on 'Really Exciting' New Book, 'Property of a Noblewoman'

— -- Bestselling author Danielle Steel says her new book, "Property of a Noblewoman," is a "really exciting one."

"It’s a woman who dies. No one really knows who she is. She leaves a safe deposit box with fascinating letters [and] a fortune in jewelry, even though everyone thought she was dead broke," Steel said today on "Good Morning America." "And two people – one from the surrogate’s court and one from an auction house – want to find out who she was and they pursue her trail and find all kinds of surprises and interesting things.

"I’m often intrigued by much older people who we have no idea who they were originally," she said of her inspiration for the book.

Steel told "GMA" she has just finished writing her 150th book. The prolific author will release six books this year alone.

"That’s all I do. I work all the time.

"I actually really love what I do,” Steele, 68, said. "I wrote my first book at 19 and I have been plugging away ever since and I really enjoy my work."