In the style of "My Ghost Story", this special will tell the terrifying tales of people whose pasts literally come back to haunt them. These are the stories of people who wronged the one person they shouldn't have: a person so hell bent on revenge that even death won't stop them. When a vengeful ghost returns to get payback, nothing is off limits.
As Emperor of Rome from 161-180, Marcus Aurelius kept the empire safe from the Parthians and Germans, but is best known for his intellectual pursuits.
Austrian physicist Christian Doppler first described the Doppler effect, in reference to the observed frequency of light and sound waves, in the paper "Concerning the Coloured Light of Double Stars."