Characters played by Michael Emerson
Narrator
Characters played by John Allegra
Sleigh Driver
Characters played by Michael Aronov
Dmitri Mendeleev
Characters played by John Curless
Ernest Rutherford
Characters played by Yan Tual
Antoine Fourcroy
Characters played by Don Bagley
Alchemist
Characters played by Lucas Dixon
Charles G. Darwin
Characters played by Hugo Becker
Antoine Lavoisier
Characters played by Jane Becker
Mendeleev's Housekeeper
Characters played by Beverly Hayes
Amabel Moseley
Characters played by Marshall Berenson
Joao Jacinto de Magellan
Characters played by Justin Blanchard
Andre-Louis Debierne
Characters played by Joe Garland
Joe Kennedy
Characters played by Erik Bloomquist
Robert Southey
Characters played by Nick Gehlfuss
Glenn Seaborg
Characters played by Gene Ravvin
Aleksandr Inostrantsev
Characters played by Ethan Corbin
Armand Seguin
Characters played by Ian Lyons
Ed McMillan
Characters played by Martin Rayner
Eugene-Anatole Demarçay
Characters played by Ava Deluca-Verley
Marie Anne Lavoisier
Characters played by Paul Davis Lyons
Arthur Wahl
Characters played by Sebastian Roché
Pierre Curie
Characters played by James Hayward
Samuel Taylor Coleridge
Characters played by Anthony Marble
Harry Moseley
Characters played by Juliet Rylance
Marie Curie
Characters played by Simon Green
Joseph Cottle
Characters played by John Michael Marrs
Phil Abelson
Characters played by Catherine Walleck
Eve Curie
Characters played by Ronald Guttman
Jean Charles Trudaine de Montigny
Characters played by Mark Nelson
Robert Millikan
Characters played by Mark Mauriello
Robert Kinglake
Characters played by Peter Stray
Luis Alvarez
Characters played by Patrick Page
Joseph Priestley
Characters played by Dennis Wise
Emilio Segrè
Characters played by Davis Robinson
Lavoisier's Waiter
Characters played by David Santori
Lavoisier's Lab Assistant
Characters played by Ethan Scholes
Priestley's Son
Characters played by Andrew Justin Smith
Edmund Davy
Characters played by Guy Strauss
Pierre Joseph Macquer
Characters played by Matthew Amendt
Humphry Davy
Characters played by Dan Whelton
Claude Berthollet
Characters played by Luke Young
John Davy
Characters played by Vasilios Asimakos
Burris Cunningham