Liev Schreiber
Narrator (52 eps)
Roy Scheider
Narrator (5 eps)
David Keys
Himself - Scientist (2 eps)
Ian Knight
Himself - Historian (1 eps)
Tony Pollard
Himself - Archaeologist (1 eps)
Dr. Jeannine Davis-Kimball
herself (1 eps)
Linnda R. Caporael
herself (1 eps)
Addison Bain
himself (1 eps)
Mike Pitts
Himself - Archaeologist (1 eps)
Martin Biddle
Himself - Archaeologist (1 eps)
Frank Hancock
Himself - Pathologist (1 eps)
Birthe Biddle
Herself - Archaeologist (1 eps)
Charlotte Roberts
Herself - Archaeologist (1 eps)
Alan Ruffman
Himself - Historian (1 eps)
Ryan Parr
Himself - PhD (1 eps)
Christy Turner
Himself - Paleo-anthroplogist (1 eps)
Judith Jesch
Herself - University of Nottingham (1 eps)
Stephen O’Brien
Himself - PhD, Geneticist (1 eps)
Albert Ammerman
Himself - Archaeologist (1 eps)
Jay O. Sanders
Narrator (voice) (1 eps)
Frank Lopergolo
Self (1 eps)
Steve Zazulyk
Self (1 eps)
Giuseppe Lanino
Leonardo da Vinci (1 eps)