Watch the full episode. See more Secrets of the Dead.
Hawley Crippen was convicted of murdering his wife in 1910. Evidence shows the body wasn't hers.8pm NOVA - WHAT ARE DREAMS?
Leading dream researchers use extraordinary experiments to investigate the world of sleep.
9pm NOVA SCIENCENOW - HOW DOES THE BRAIN WORK?
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Can new science help us understand how the brain allows us to think act, feel and behave?