With each member of the family suffering from his or her own affliction and inability to communicate with anyone else, the audience is the only player taking everyone in loud and clear.
Sarah Kane's writing doesn't hesitate to stare straight into the eyes of real-life horrow, and when the material is handled right, the result is remarkable.
Judi Dench's book (as told to John Miller) is officially not a biography and meant instead to clear some things up; yet she manages only in telling us what we already know.