I'll make you a proposition. You want that missing page. I want information.
Mrs. Stoker: Information, Mr. Archer?
Gilbert Archer: Let me put it this way. I have a few theories I'd like to have you confirm.
Matthew Stoker: Mr. Archer, you've always found me a very reasonable man.
Gilbert Archer: You've been ...
Mrs. Stoker: ...
When the body and Bible are disinterred, the Bible is in remarkably good condition for a book which has been buried with a corpse for several years. Archer then proceeds to leaf through this valuable item in the pouring rain and in [presumably] very poor light, seemingly for the sole purpose of revealing his doings to the villains of the piece.