Pardonable Lies, by Jacqueline Winspear

I read the first Maisie Dobbs book and thought the notion of a young woman in post-WWI England rising far above her station to become a psychologist and investigator was a little far fetched.  But suspending disbelief, I enjoyed Pardonable Lies.  Maisie is called in by the police to question a silent young girl found covered in blood, clutching a knife, and standing over her "uncle"; is hired to verify the death of a young aviator in France during the war; and is asked to look into the circumstances of the war death of her best friend's brother.  As these investigations move forward, Maisie is followed, spied upon, and threatened, and multiple attempts are made on her life.