For fans of He Said/She Said and Anatomy of a Scandal, Penny Hancock's I Thought I Knew You is about secrets and lies - and whose side you take when it really matters. Who do you know better? Your oldest friend? Or your child? And who should you believe when one accuses the other of an abhorrent crime? Jules and Holly have been best friends since university. They tell each other everything, trading revelations and confessions, and sharing both the big moments and the small details of their lives: Holly is the only person who knows about Jules's affair; Jules was there for Holly when...