Desc: The Last Secret of Dr. Crippen: Directed by Clive Maltby. With Terry Francis, Heather Coombs, David Broughton-Davies, Claire Farrington. Documentary investigating the case of Dr Crippen, hanged for killing his wife in 1910. Reveals that letters have come to light supposedly sent to the authorities from the presumed murdered Cora Crippen, and that, along with evidence may mean that he was wrongly convicted and executed.