Dame Lettie, a blue-blooded reformer, Godfrey - her rather irritating brother, and his once fabulous novelist wife Charmian. But who is the caller? And why are they reminding them of this final truth? It's unsettling and mysterious. The activity increases and soon a witch-hunt is in full force, with nobody...
Ask a dozen people to name a genius and the odds are that 'Einstein' will spring to their lips. Ask them the meaning of 'relativity' and few of them will be able to tell you what it is.