Aired: 10/6/2009
The guest celebrity is sports presenter Clare Balding and the experts are Dr Aubrey de Grey and Lucy Beresford.
Aired: 10/14/2009
Andy Hamilton, Reginald D Hunter and Martha Kearney decide if experts' theories are valid.
Aired: 10/25/2009
The guest celebrity is broadcaster Kirsty Wark and the experts are Dr David Bainbridge, Professor Chris Budd and Professor Stanley Wells.
Aired: 11/2/2009
The guest celebrity is broadcaster Clare Balding and the experts are Prof Geoff Beattie and Marcus Chown.
Aired: 11/9/2009
The guest celebrity is broadcaster Martha Kearney and the experts are Julian Richards and Dr Peter Thompson.
Aired: 11/10/2009
The guest celebrity is Vince Cable MP and the experts are, once again, Dr David Bainbridge and Marcus Chown.
Aired: 11/24/2009
Clare Balding returns to the judge's chair, with experts David Ryan and Marcus Chown presenting the final theories of the series.