Paul Olding

A mass grave containing more than 2,000 skeletons was found in one of Rome's catacombs following a roof collapse in an area marked with an X in the Vatican's underground mapping system. In this documentary, historian Michael Scott joins experts called in by to identify who the dead were and what killed them. (Radio Times)

Archaeologists use submersible robots and computer simulations to investigate the submerged city of Pavlopetri, which lies off the southern coast of the Greek mainland. Originally rediscovered in 1967, it is believed to be the oldest underwater city in the world. Philip Glenister narrates this documentary following Jon Henderson of the University of Nottingham as he leads a team of experts hoping to discover what life was like for the citizens of Pavlopetri 3,500 years ago

The series comprises five episodes, each of which focuses on an aspect of the Solar System and features a 'wonder' relevant to the theme. Episodes are: "Empire of the Sun" "Order Out of Chaos" "The Thin Blue Line" "Dead or Alive" "Aliens" (wikipedia)