But now former Bond girl Pike has announced that she has already started work on the project with Fiennes.
And she claims her own fascination with Darwin's theories has helped her in the role.
She says, "I'm definitely a Darwinist, but playing his wife has been a real eye-opener. She was very religious and his discoveries placed a heavy strain on their marriage. We are exploring different angles to the story."
The movie is based on a book written by Darwin's great-great-grandson Randal Keynes, and will be released to coincide with the bicentenary of his birth in 2009.
Source: WENN