October 6, 2009 · 30 min
The guest celebrity is sports presenter Clare Balding and the experts are Dr Aubrey de Grey and Lucy Beresford.
October 14, 2009 · 30 min
Andy Hamilton, Reginald D Hunter and Martha Kearney decide if experts' theories are valid.
October 25, 2009 · 30 min
The guest celebrity is broadcaster Kirsty Wark and the experts are Dr David Bainbridge, Professor Chris Budd and Professor Stanley Wells.
November 2, 2009 · 30 min
The guest celebrity is broadcaster Clare Balding and the experts are Prof Geoff Beattie and Marcus Chown.
November 9, 2009 · 30 min
The guest celebrity is broadcaster Martha Kearney and the experts are Julian Richards and Dr Peter Thompson.
November 10, 2009 · 30 min
The guest celebrity is Vince Cable MP and the experts are, once again, Dr David Bainbridge and Marcus Chown.
30 min
November 24, 2009 · 30 min
Clare Balding returns to the judge's chair, with experts David Ryan and Marcus Chown presenting the final theories of the series.
